diff --git a/frontend/src/components/Sidebar.style.ts b/frontend/src/components/Sidebar.style.ts
new file mode 100644
index 00000000..2af9dfa8
--- /dev/null
+++ b/frontend/src/components/Sidebar.style.ts
@@ -0,0 +1,18 @@
+import { tokens } from "@equinor/eds-tokens";
+import styled from "styled-components";
+
+export const NestedAccordion = styled.div`
+  /* Remove EDS accordion borders so nested groups read as one sidebar section. */
+  & > div {
+    border-bottom: none;
+  }
+
+  [role="region"] {
+    border-bottom: none;
+  }
+
+  /* Indent nested links to keep child pages visually grouped under the parent. */
+  [role="region"] a {
+    padding-left: ${tokens.spacings.comfortable.medium};
+  }
+`;
diff --git a/frontend/src/components/Sidebar.tsx b/frontend/src/components/Sidebar.tsx
index e260a609..f37ff872 100644
--- a/frontend/src/components/Sidebar.tsx
+++ b/frontend/src/components/Sidebar.tsx
@@ -1,14 +1,63 @@
 import { SideBar as EdsSideBar } from "@equinor/eds-core-react";
+import type { IconData } from "@equinor/eds-icons";
 import { account_circle, dashboard, folder } from "@equinor/eds-icons";
 import { Link, useLocation } from "@tanstack/react-router";
 
 import { useProject } from "#services/project";
+import { NestedAccordion } from "./Sidebar.style";
 
-type AccordianSubItem = {
+// EDS requires an icon for accordion headers; a blank icon keeps nested labels aligned.
+const blankIcon: IconData = {
+  name: "blank",
+  prefix: "eds",
+  height: "24",
+  width: "24",
+  svgPathData: "",
+};
+
+type AccordionSubItem = {
   label: string;
   to: string;
+  children?: AccordionSubItem[];
 };
 
+function SidebarItem({
+  item,
+  currentPath,
+}: {
+  item: AccordionSubItem;
+  currentPath: string;
+}) {
+  if (item.children) {
+    return (
+      <NestedAccordion>
+        <EdsSideBar.Accordion
+          label={item.label}
+          icon={blankIcon}
+          isExpanded={currentPath.startsWith(item.to)}
+        >
+          {item.children.map((child) => (
+            <SidebarItem
+              key={child.to}
+              item={child}
+              currentPath={currentPath}
+            />
+          ))}
+        </EdsSideBar.Accordion>
+      </NestedAccordion>
+    );
+  }
+
+  return (
+    <EdsSideBar.AccordionItem
+      label={item.label}
+      as={Link}
+      to={item.to}
+      active={currentPath === item.to}
+    />
+  );
+}
+
 export function Sidebar() {
   const project = useProject();
   const location = useLocation();
@@ -18,12 +67,28 @@ export function Sidebar() {
   const projectExpanded = currentPath.startsWith("/project");
   const userExpanded = currentPath.startsWith("/user");
 
-  const ProjectSubItems: AccordianSubItem[] = [];
+  const ProjectSubItems: AccordionSubItem[] = [];
   if (project.status) {
-    ProjectSubItems.push({ label: "Masterdata", to: "/masterdata" });
-    ProjectSubItems.push({ label: "RMS", to: "/rms" });
-    ProjectSubItems.push({ label: "Stratigraphy", to: "/stratigraphy" });
-    ProjectSubItems.push({ label: "History", to: "/history" });
+    ProjectSubItems.push({ label: "Masterdata", to: "/project/masterdata" });
+    ProjectSubItems.push({
+      label: "RMS",
+      to: "/project/rms",
+      children: [
+        { label: "Overview", to: "/project/rms/overview" },
+        { label: "Stratigraphy", to: "/project/rms/stratigraphy" },
+        { label: "Wellbores", to: "/project/rms/wellbores" },
+      ],
+    });
+    ProjectSubItems.push({
+      label: "Mappings",
+      to: "/project/mappings",
+      children: [
+        { label: "Overview", to: "/project/mappings/overview" },
+        { label: "Stratigraphy", to: "/project/mappings/stratigraphy" },
+        { label: "Wellbores", to: "/project/mappings/wellbores" },
+      ],
+    });
+    ProjectSubItems.push({ label: "History", to: "/project/history" });
   }
 
   return (
@@ -49,19 +114,9 @@ export function Sidebar() {
             active={currentPath === "/project"}
           />
 
-          {ProjectSubItems.map((item) => {
-            const to = `/project${item.to}`;
-
-            return (
-              <EdsSideBar.AccordionItem
-                key={to}
-                label={item.label}
-                as={Link}
-                to={to}
-                active={currentPath === to}
-              />
-            );
-          })}
+          {ProjectSubItems.map((item) => (
+            <SidebarItem key={item.to} item={item} currentPath={currentPath} />
+          ))}
         </EdsSideBar.Accordion>
 
         <EdsSideBar.Accordion
diff --git a/frontend/src/components/project/rms/Overview.tsx b/frontend/src/components/project/rms/Overview.tsx
index 0fad91ec..863bb5dc 100644
--- a/frontend/src/components/project/rms/Overview.tsx
+++ b/frontend/src/components/project/rms/Overview.tsx
@@ -40,7 +40,6 @@ import {
 import { fieldContext, formContext } from "#utils/form";
 import { getRmsProjectName } from "#utils/model";
 import { isVersionLessThan } from "#utils/string";
-import { Stratigraphy } from "./Stratigraphy";
 
 const { useAppForm: useAppFormRmsEditor } = createFormHook({
   fieldComponents: {
@@ -382,33 +381,25 @@ export function Overview({
   isRmsProjectOpen: boolean;
 }) {
   return (
-    <>
-      <PageSectionWidthConstrained>
-        <PageText>
-          The following is the main RMS project located in the <i>rms/model</i>{" "}
-          directory. The version is detected automatically:
-        </PageText>
-
-        {rmsData ? (
-          <RmsInfo rmsData={rmsData} />
-        ) : (
-          <PageCode>No RMS project information found in the project.</PageCode>
-        )}
-
-        <RmsProjectActions
-          rmsData={rmsData}
-          projectReadOnly={projectReadOnly}
-          isRmsProjectOpen={isRmsProjectOpen}
-        />
-
-        <PageSectionSpacer />
-      </PageSectionWidthConstrained>
-
-      <Stratigraphy
+    <PageSectionWidthConstrained>
+      <PageText>
+        The following is the main RMS project located in the <i>rms/model</i>{" "}
+        directory. The version is detected automatically:
+      </PageText>
+
+      {rmsData ? (
+        <RmsInfo rmsData={rmsData} />
+      ) : (
+        <PageCode>No RMS project information found in the project.</PageCode>
+      )}
+
+      <RmsProjectActions
         rmsData={rmsData}
         projectReadOnly={projectReadOnly}
         isRmsProjectOpen={isRmsProjectOpen}
       />
-    </>
+
+      <PageSectionSpacer />
+    </PageSectionWidthConstrained>
   );
 }
diff --git a/frontend/src/components/project/rms/Stratigraphy.tsx b/frontend/src/components/project/rms/Stratigraphy.tsx
index 3ad34740..3b885868 100644
--- a/frontend/src/components/project/rms/Stratigraphy.tsx
+++ b/frontend/src/components/project/rms/Stratigraphy.tsx
@@ -471,8 +471,6 @@ export function Stratigraphy({
   return (
     <>
       <PageSectionWidthConstrained>
-        <PageHeader $variant="h3">Stratigraphy</PageHeader>
-
         <PageText>
           The following is the model stratigraphy stored in the project, this
           can be a subset or the full RMS stratigraphy. It is only the stored
diff --git a/frontend/src/routeTree.gen.ts b/frontend/src/routeTree.gen.ts
index c3a9d025..feefe0aa 100644
--- a/frontend/src/routeTree.gen.ts
+++ b/frontend/src/routeTree.gen.ts
@@ -13,10 +13,18 @@ import { Route as IndexRouteImport } from "./routes/index";
 import { Route as ProjectIndexRouteImport } from "./routes/project/index";
 import { Route as UserRecoveryRouteImport } from "./routes/user/recovery";
 import { Route as UserKeysRouteImport } from "./routes/user/keys";
-import { Route as ProjectStratigraphyRouteImport } from "./routes/project/stratigraphy";
 import { Route as ProjectRmsRouteImport } from "./routes/project/rms";
 import { Route as ProjectMasterdataRouteImport } from "./routes/project/masterdata";
+import { Route as ProjectMappingsRouteImport } from "./routes/project/mappings";
 import { Route as ProjectHistoryRouteImport } from "./routes/project/history";
+import { Route as ProjectRmsIndexRouteImport } from "./routes/project/rms/index";
+import { Route as ProjectMappingsIndexRouteImport } from "./routes/project/mappings/index";
+import { Route as ProjectRmsWellboresRouteImport } from "./routes/project/rms/wellbores";
+import { Route as ProjectRmsStratigraphyRouteImport } from "./routes/project/rms/stratigraphy";
+import { Route as ProjectRmsOverviewRouteImport } from "./routes/project/rms/overview";
+import { Route as ProjectMappingsWellboresRouteImport } from "./routes/project/mappings/wellbores";
+import { Route as ProjectMappingsStratigraphyRouteImport } from "./routes/project/mappings/stratigraphy";
+import { Route as ProjectMappingsOverviewRouteImport } from "./routes/project/mappings/overview";
 
 const IndexRoute = IndexRouteImport.update({
   id: "/",
@@ -38,11 +46,6 @@ const UserKeysRoute = UserKeysRouteImport.update({
   path: "/user/keys",
   getParentRoute: () => rootRouteImport,
 } as any);
-const ProjectStratigraphyRoute = ProjectStratigraphyRouteImport.update({
-  id: "/project/stratigraphy",
-  path: "/project/stratigraphy",
-  getParentRoute: () => rootRouteImport,
-} as any);
 const ProjectRmsRoute = ProjectRmsRouteImport.update({
   id: "/project/rms",
   path: "/project/rms",
@@ -53,82 +56,173 @@ const ProjectMasterdataRoute = ProjectMasterdataRouteImport.update({
   path: "/project/masterdata",
   getParentRoute: () => rootRouteImport,
 } as any);
+const ProjectMappingsRoute = ProjectMappingsRouteImport.update({
+  id: "/project/mappings",
+  path: "/project/mappings",
+  getParentRoute: () => rootRouteImport,
+} as any);
 const ProjectHistoryRoute = ProjectHistoryRouteImport.update({
   id: "/project/history",
   path: "/project/history",
   getParentRoute: () => rootRouteImport,
 } as any);
+const ProjectRmsIndexRoute = ProjectRmsIndexRouteImport.update({
+  id: "/",
+  path: "/",
+  getParentRoute: () => ProjectRmsRoute,
+} as any);
+const ProjectMappingsIndexRoute = ProjectMappingsIndexRouteImport.update({
+  id: "/",
+  path: "/",
+  getParentRoute: () => ProjectMappingsRoute,
+} as any);
+const ProjectRmsWellboresRoute = ProjectRmsWellboresRouteImport.update({
+  id: "/wellbores",
+  path: "/wellbores",
+  getParentRoute: () => ProjectRmsRoute,
+} as any);
+const ProjectRmsStratigraphyRoute = ProjectRmsStratigraphyRouteImport.update({
+  id: "/stratigraphy",
+  path: "/stratigraphy",
+  getParentRoute: () => ProjectRmsRoute,
+} as any);
+const ProjectRmsOverviewRoute = ProjectRmsOverviewRouteImport.update({
+  id: "/overview",
+  path: "/overview",
+  getParentRoute: () => ProjectRmsRoute,
+} as any);
+const ProjectMappingsWellboresRoute =
+  ProjectMappingsWellboresRouteImport.update({
+    id: "/wellbores",
+    path: "/wellbores",
+    getParentRoute: () => ProjectMappingsRoute,
+  } as any);
+const ProjectMappingsStratigraphyRoute =
+  ProjectMappingsStratigraphyRouteImport.update({
+    id: "/stratigraphy",
+    path: "/stratigraphy",
+    getParentRoute: () => ProjectMappingsRoute,
+  } as any);
+const ProjectMappingsOverviewRoute = ProjectMappingsOverviewRouteImport.update({
+  id: "/overview",
+  path: "/overview",
+  getParentRoute: () => ProjectMappingsRoute,
+} as any);
 
 export interface FileRoutesByFullPath {
   "/": typeof IndexRoute;
   "/project/history": typeof ProjectHistoryRoute;
+  "/project/mappings": typeof ProjectMappingsRouteWithChildren;
   "/project/masterdata": typeof ProjectMasterdataRoute;
-  "/project/rms": typeof ProjectRmsRoute;
-  "/project/stratigraphy": typeof ProjectStratigraphyRoute;
+  "/project/rms": typeof ProjectRmsRouteWithChildren;
   "/user/keys": typeof UserKeysRoute;
   "/user/recovery": typeof UserRecoveryRoute;
   "/project/": typeof ProjectIndexRoute;
+  "/project/mappings/overview": typeof ProjectMappingsOverviewRoute;
+  "/project/mappings/stratigraphy": typeof ProjectMappingsStratigraphyRoute;
+  "/project/mappings/wellbores": typeof ProjectMappingsWellboresRoute;
+  "/project/rms/overview": typeof ProjectRmsOverviewRoute;
+  "/project/rms/stratigraphy": typeof ProjectRmsStratigraphyRoute;
+  "/project/rms/wellbores": typeof ProjectRmsWellboresRoute;
+  "/project/mappings/": typeof ProjectMappingsIndexRoute;
+  "/project/rms/": typeof ProjectRmsIndexRoute;
 }
 export interface FileRoutesByTo {
   "/": typeof IndexRoute;
   "/project/history": typeof ProjectHistoryRoute;
   "/project/masterdata": typeof ProjectMasterdataRoute;
-  "/project/rms": typeof ProjectRmsRoute;
-  "/project/stratigraphy": typeof ProjectStratigraphyRoute;
   "/user/keys": typeof UserKeysRoute;
   "/user/recovery": typeof UserRecoveryRoute;
   "/project": typeof ProjectIndexRoute;
+  "/project/mappings/overview": typeof ProjectMappingsOverviewRoute;
+  "/project/mappings/stratigraphy": typeof ProjectMappingsStratigraphyRoute;
+  "/project/mappings/wellbores": typeof ProjectMappingsWellboresRoute;
+  "/project/rms/overview": typeof ProjectRmsOverviewRoute;
+  "/project/rms/stratigraphy": typeof ProjectRmsStratigraphyRoute;
+  "/project/rms/wellbores": typeof ProjectRmsWellboresRoute;
+  "/project/mappings": typeof ProjectMappingsIndexRoute;
+  "/project/rms": typeof ProjectRmsIndexRoute;
 }
 export interface FileRoutesById {
   __root__: typeof rootRouteImport;
   "/": typeof IndexRoute;
   "/project/history": typeof ProjectHistoryRoute;
+  "/project/mappings": typeof ProjectMappingsRouteWithChildren;
   "/project/masterdata": typeof ProjectMasterdataRoute;
-  "/project/rms": typeof ProjectRmsRoute;
-  "/project/stratigraphy": typeof ProjectStratigraphyRoute;
+  "/project/rms": typeof ProjectRmsRouteWithChildren;
   "/user/keys": typeof UserKeysRoute;
   "/user/recovery": typeof UserRecoveryRoute;
   "/project/": typeof ProjectIndexRoute;
+  "/project/mappings/overview": typeof ProjectMappingsOverviewRoute;
+  "/project/mappings/stratigraphy": typeof ProjectMappingsStratigraphyRoute;
+  "/project/mappings/wellbores": typeof ProjectMappingsWellboresRoute;
+  "/project/rms/overview": typeof ProjectRmsOverviewRoute;
+  "/project/rms/stratigraphy": typeof ProjectRmsStratigraphyRoute;
+  "/project/rms/wellbores": typeof ProjectRmsWellboresRoute;
+  "/project/mappings/": typeof ProjectMappingsIndexRoute;
+  "/project/rms/": typeof ProjectRmsIndexRoute;
 }
 export interface FileRouteTypes {
   fileRoutesByFullPath: FileRoutesByFullPath;
   fullPaths:
     | "/"
     | "/project/history"
+    | "/project/mappings"
     | "/project/masterdata"
     | "/project/rms"
-    | "/project/stratigraphy"
     | "/user/keys"
     | "/user/recovery"
-    | "/project/";
+    | "/project/"
+    | "/project/mappings/overview"
+    | "/project/mappings/stratigraphy"
+    | "/project/mappings/wellbores"
+    | "/project/rms/overview"
+    | "/project/rms/stratigraphy"
+    | "/project/rms/wellbores"
+    | "/project/mappings/"
+    | "/project/rms/";
   fileRoutesByTo: FileRoutesByTo;
   to:
     | "/"
     | "/project/history"
     | "/project/masterdata"
-    | "/project/rms"
-    | "/project/stratigraphy"
     | "/user/keys"
     | "/user/recovery"
-    | "/project";
+    | "/project"
+    | "/project/mappings/overview"
+    | "/project/mappings/stratigraphy"
+    | "/project/mappings/wellbores"
+    | "/project/rms/overview"
+    | "/project/rms/stratigraphy"
+    | "/project/rms/wellbores"
+    | "/project/mappings"
+    | "/project/rms";
   id:
     | "__root__"
     | "/"
     | "/project/history"
+    | "/project/mappings"
     | "/project/masterdata"
     | "/project/rms"
-    | "/project/stratigraphy"
     | "/user/keys"
     | "/user/recovery"
-    | "/project/";
+    | "/project/"
+    | "/project/mappings/overview"
+    | "/project/mappings/stratigraphy"
+    | "/project/mappings/wellbores"
+    | "/project/rms/overview"
+    | "/project/rms/stratigraphy"
+    | "/project/rms/wellbores"
+    | "/project/mappings/"
+    | "/project/rms/";
   fileRoutesById: FileRoutesById;
 }
 export interface RootRouteChildren {
   IndexRoute: typeof IndexRoute;
   ProjectHistoryRoute: typeof ProjectHistoryRoute;
+  ProjectMappingsRoute: typeof ProjectMappingsRouteWithChildren;
   ProjectMasterdataRoute: typeof ProjectMasterdataRoute;
-  ProjectRmsRoute: typeof ProjectRmsRoute;
-  ProjectStratigraphyRoute: typeof ProjectStratigraphyRoute;
+  ProjectRmsRoute: typeof ProjectRmsRouteWithChildren;
   UserKeysRoute: typeof UserKeysRoute;
   UserRecoveryRoute: typeof UserRecoveryRoute;
   ProjectIndexRoute: typeof ProjectIndexRoute;
@@ -164,13 +258,6 @@ declare module "@tanstack/react-router" {
       preLoaderRoute: typeof UserKeysRouteImport;
       parentRoute: typeof rootRouteImport;
     };
-    "/project/stratigraphy": {
-      id: "/project/stratigraphy";
-      path: "/project/stratigraphy";
-      fullPath: "/project/stratigraphy";
-      preLoaderRoute: typeof ProjectStratigraphyRouteImport;
-      parentRoute: typeof rootRouteImport;
-    };
     "/project/rms": {
       id: "/project/rms";
       path: "/project/rms";
@@ -185,6 +272,13 @@ declare module "@tanstack/react-router" {
       preLoaderRoute: typeof ProjectMasterdataRouteImport;
       parentRoute: typeof rootRouteImport;
     };
+    "/project/mappings": {
+      id: "/project/mappings";
+      path: "/project/mappings";
+      fullPath: "/project/mappings";
+      preLoaderRoute: typeof ProjectMappingsRouteImport;
+      parentRoute: typeof rootRouteImport;
+    };
     "/project/history": {
       id: "/project/history";
       path: "/project/history";
@@ -192,15 +286,107 @@ declare module "@tanstack/react-router" {
       preLoaderRoute: typeof ProjectHistoryRouteImport;
       parentRoute: typeof rootRouteImport;
     };
+    "/project/rms/": {
+      id: "/project/rms/";
+      path: "/";
+      fullPath: "/project/rms/";
+      preLoaderRoute: typeof ProjectRmsIndexRouteImport;
+      parentRoute: typeof ProjectRmsRoute;
+    };
+    "/project/mappings/": {
+      id: "/project/mappings/";
+      path: "/";
+      fullPath: "/project/mappings/";
+      preLoaderRoute: typeof ProjectMappingsIndexRouteImport;
+      parentRoute: typeof ProjectMappingsRoute;
+    };
+    "/project/rms/wellbores": {
+      id: "/project/rms/wellbores";
+      path: "/wellbores";
+      fullPath: "/project/rms/wellbores";
+      preLoaderRoute: typeof ProjectRmsWellboresRouteImport;
+      parentRoute: typeof ProjectRmsRoute;
+    };
+    "/project/rms/stratigraphy": {
+      id: "/project/rms/stratigraphy";
+      path: "/stratigraphy";
+      fullPath: "/project/rms/stratigraphy";
+      preLoaderRoute: typeof ProjectRmsStratigraphyRouteImport;
+      parentRoute: typeof ProjectRmsRoute;
+    };
+    "/project/rms/overview": {
+      id: "/project/rms/overview";
+      path: "/overview";
+      fullPath: "/project/rms/overview";
+      preLoaderRoute: typeof ProjectRmsOverviewRouteImport;
+      parentRoute: typeof ProjectRmsRoute;
+    };
+    "/project/mappings/wellbores": {
+      id: "/project/mappings/wellbores";
+      path: "/wellbores";
+      fullPath: "/project/mappings/wellbores";
+      preLoaderRoute: typeof ProjectMappingsWellboresRouteImport;
+      parentRoute: typeof ProjectMappingsRoute;
+    };
+    "/project/mappings/stratigraphy": {
+      id: "/project/mappings/stratigraphy";
+      path: "/stratigraphy";
+      fullPath: "/project/mappings/stratigraphy";
+      preLoaderRoute: typeof ProjectMappingsStratigraphyRouteImport;
+      parentRoute: typeof ProjectMappingsRoute;
+    };
+    "/project/mappings/overview": {
+      id: "/project/mappings/overview";
+      path: "/overview";
+      fullPath: "/project/mappings/overview";
+      preLoaderRoute: typeof ProjectMappingsOverviewRouteImport;
+      parentRoute: typeof ProjectMappingsRoute;
+    };
   }
 }
 
+interface ProjectMappingsRouteChildren {
+  ProjectMappingsOverviewRoute: typeof ProjectMappingsOverviewRoute;
+  ProjectMappingsStratigraphyRoute: typeof ProjectMappingsStratigraphyRoute;
+  ProjectMappingsWellboresRoute: typeof ProjectMappingsWellboresRoute;
+  ProjectMappingsIndexRoute: typeof ProjectMappingsIndexRoute;
+}
+
+const ProjectMappingsRouteChildren: ProjectMappingsRouteChildren = {
+  ProjectMappingsOverviewRoute: ProjectMappingsOverviewRoute,
+  ProjectMappingsStratigraphyRoute: ProjectMappingsStratigraphyRoute,
+  ProjectMappingsWellboresRoute: ProjectMappingsWellboresRoute,
+  ProjectMappingsIndexRoute: ProjectMappingsIndexRoute,
+};
+
+const ProjectMappingsRouteWithChildren = ProjectMappingsRoute._addFileChildren(
+  ProjectMappingsRouteChildren,
+);
+
+interface ProjectRmsRouteChildren {
+  ProjectRmsOverviewRoute: typeof ProjectRmsOverviewRoute;
+  ProjectRmsStratigraphyRoute: typeof ProjectRmsStratigraphyRoute;
+  ProjectRmsWellboresRoute: typeof ProjectRmsWellboresRoute;
+  ProjectRmsIndexRoute: typeof ProjectRmsIndexRoute;
+}
+
+const ProjectRmsRouteChildren: ProjectRmsRouteChildren = {
+  ProjectRmsOverviewRoute: ProjectRmsOverviewRoute,
+  ProjectRmsStratigraphyRoute: ProjectRmsStratigraphyRoute,
+  ProjectRmsWellboresRoute: ProjectRmsWellboresRoute,
+  ProjectRmsIndexRoute: ProjectRmsIndexRoute,
+};
+
+const ProjectRmsRouteWithChildren = ProjectRmsRoute._addFileChildren(
+  ProjectRmsRouteChildren,
+);
+
 const rootRouteChildren: RootRouteChildren = {
   IndexRoute: IndexRoute,
   ProjectHistoryRoute: ProjectHistoryRoute,
+  ProjectMappingsRoute: ProjectMappingsRouteWithChildren,
   ProjectMasterdataRoute: ProjectMasterdataRoute,
-  ProjectRmsRoute: ProjectRmsRoute,
-  ProjectStratigraphyRoute: ProjectStratigraphyRoute,
+  ProjectRmsRoute: ProjectRmsRouteWithChildren,
   UserKeysRoute: UserKeysRoute,
   UserRecoveryRoute: UserRecoveryRoute,
   ProjectIndexRoute: ProjectIndexRoute,
diff --git a/frontend/src/routes/project/mappings.tsx b/frontend/src/routes/project/mappings.tsx
new file mode 100644
index 00000000..f6e896e4
--- /dev/null
+++ b/frontend/src/routes/project/mappings.tsx
@@ -0,0 +1,9 @@
+import { createFileRoute, Outlet } from "@tanstack/react-router";
+
+export const Route = createFileRoute("/project/mappings")({
+  component: RouteComponent,
+});
+
+function RouteComponent() {
+  return <Outlet />;
+}
diff --git a/frontend/src/routes/project/mappings/index.tsx b/frontend/src/routes/project/mappings/index.tsx
new file mode 100644
index 00000000..ed597d3c
--- /dev/null
+++ b/frontend/src/routes/project/mappings/index.tsx
@@ -0,0 +1,5 @@
+import { createFileRoute, Navigate } from "@tanstack/react-router";
+
+export const Route = createFileRoute("/project/mappings/")({
+  component: () => <Navigate to="/project/mappings/overview" replace />,
+});
diff --git a/frontend/src/routes/project/mappings/overview.tsx b/frontend/src/routes/project/mappings/overview.tsx
new file mode 100644
index 00000000..da908539
--- /dev/null
+++ b/frontend/src/routes/project/mappings/overview.tsx
@@ -0,0 +1,27 @@
+import { createFileRoute } from "@tanstack/react-router";
+
+import { useProject } from "#services/project";
+import {
+  PageHeader,
+  PageSectionWidthConstrained,
+  PageText,
+} from "#styles/common";
+
+export const Route = createFileRoute("/project/mappings/overview")({
+  component: RouteComponent,
+});
+
+function RouteComponent() {
+  const project = useProject();
+
+  return (
+    <PageSectionWidthConstrained>
+      <PageHeader>Overview</PageHeader>
+      <PageText>
+        {project.status
+          ? "Mappings overview is coming soon."
+          : "Project not set."}
+      </PageText>
+    </PageSectionWidthConstrained>
+  );
+}
diff --git a/frontend/src/routes/project/stratigraphy.tsx b/frontend/src/routes/project/mappings/stratigraphy.tsx
similarity index 97%
rename from frontend/src/routes/project/stratigraphy.tsx
rename to frontend/src/routes/project/mappings/stratigraphy.tsx
index bb013d93..55ffb97a 100644
--- a/frontend/src/routes/project/stratigraphy.tsx
+++ b/frontend/src/routes/project/mappings/stratigraphy.tsx
@@ -18,7 +18,7 @@ import {
   setStorageItem,
 } from "#utils/storage";
 
-export const Route = createFileRoute("/project/stratigraphy")({
+export const Route = createFileRoute("/project/mappings/stratigraphy")({
   component: RouteComponent,
 });
 
diff --git a/frontend/src/routes/project/mappings/wellbores.tsx b/frontend/src/routes/project/mappings/wellbores.tsx
new file mode 100644
index 00000000..4d42b306
--- /dev/null
+++ b/frontend/src/routes/project/mappings/wellbores.tsx
@@ -0,0 +1,27 @@
+import { createFileRoute } from "@tanstack/react-router";
+
+import { useProject } from "#services/project";
+import {
+  PageHeader,
+  PageSectionWidthConstrained,
+  PageText,
+} from "#styles/common";
+
+export const Route = createFileRoute("/project/mappings/wellbores")({
+  component: RouteComponent,
+});
+
+function RouteComponent() {
+  const project = useProject();
+
+  return (
+    <PageSectionWidthConstrained>
+      <PageHeader>Wellbores</PageHeader>
+      <PageText>
+        {project.status
+          ? "Wellbore mappings are coming soon."
+          : "Project not set."}
+      </PageText>
+    </PageSectionWidthConstrained>
+  );
+}
diff --git a/frontend/src/routes/project/rms.tsx b/frontend/src/routes/project/rms.tsx
index 1aa44ae6..2101bde8 100644
--- a/frontend/src/routes/project/rms.tsx
+++ b/frontend/src/routes/project/rms.tsx
@@ -1,46 +1,9 @@
-import { createFileRoute } from "@tanstack/react-router";
-import { Suspense } from "react";
-
-import { Loading } from "#components/common";
-import { Overview } from "#components/project/rms/Overview";
-import { useProject } from "#services/project";
-import {
-  PageContainerNotWidthConstrained,
-  PageHeader,
-  PageSectionWidthConstrained,
-  PageText,
-} from "#styles/common";
+import { createFileRoute, Outlet } from "@tanstack/react-router";
 
 export const Route = createFileRoute("/project/rms")({
   component: RouteComponent,
 });
 
-function Content() {
-  const project = useProject();
-
-  return project.status && project.data ? (
-    <Overview
-      rmsData={project.data.config.rms}
-      projectReadOnly={!(project.lockStatus?.is_lock_acquired ?? false)}
-      isRmsProjectOpen={!!project.rmsExpiresAt}
-    />
-  ) : (
-    <PageSectionWidthConstrained>
-      <PageText>Project not set.</PageText>
-    </PageSectionWidthConstrained>
-  );
-}
-
 function RouteComponent() {
-  return (
-    <PageContainerNotWidthConstrained>
-      <PageSectionWidthConstrained>
-        <PageHeader>RMS</PageHeader>
-      </PageSectionWidthConstrained>
-
-      <Suspense fallback={<Loading />}>
-        <Content />
-      </Suspense>
-    </PageContainerNotWidthConstrained>
-  );
+  return <Outlet />;
 }
diff --git a/frontend/src/routes/project/rms/index.tsx b/frontend/src/routes/project/rms/index.tsx
new file mode 100644
index 00000000..581fadb8
--- /dev/null
+++ b/frontend/src/routes/project/rms/index.tsx
@@ -0,0 +1,5 @@
+import { createFileRoute, Navigate } from "@tanstack/react-router";
+
+export const Route = createFileRoute("/project/rms/")({
+  component: () => <Navigate to="/project/rms/overview" replace />,
+});
diff --git a/frontend/src/routes/project/rms/overview.tsx b/frontend/src/routes/project/rms/overview.tsx
new file mode 100644
index 00000000..b39e819c
--- /dev/null
+++ b/frontend/src/routes/project/rms/overview.tsx
@@ -0,0 +1,45 @@
+import { createFileRoute } from "@tanstack/react-router";
+import { Suspense } from "react";
+
+import { Loading } from "#components/common";
+import { Overview } from "#components/project/rms/Overview";
+import { useProject } from "#services/project";
+import {
+  PageHeader,
+  PageSectionWidthConstrained,
+  PageText,
+} from "#styles/common";
+
+export const Route = createFileRoute("/project/rms/overview")({
+  component: RouteComponent,
+});
+
+function Content() {
+  const project = useProject();
+
+  return project.status && project.data ? (
+    <Overview
+      rmsData={project.data.config.rms}
+      projectReadOnly={!(project.lockStatus?.is_lock_acquired ?? false)}
+      isRmsProjectOpen={!!project.rmsExpiresAt}
+    />
+  ) : (
+    <PageSectionWidthConstrained>
+      <PageText>Project not set.</PageText>
+    </PageSectionWidthConstrained>
+  );
+}
+
+function RouteComponent() {
+  return (
+    <>
+      <PageSectionWidthConstrained>
+        <PageHeader>Overview</PageHeader>
+      </PageSectionWidthConstrained>
+
+      <Suspense fallback={<Loading />}>
+        <Content />
+      </Suspense>
+    </>
+  );
+}
diff --git a/frontend/src/routes/project/rms/stratigraphy.tsx b/frontend/src/routes/project/rms/stratigraphy.tsx
new file mode 100644
index 00000000..db9660e6
--- /dev/null
+++ b/frontend/src/routes/project/rms/stratigraphy.tsx
@@ -0,0 +1,46 @@
+import { createFileRoute } from "@tanstack/react-router";
+import { Suspense } from "react";
+
+import { Loading } from "#components/common";
+import { Stratigraphy } from "#components/project/rms/Stratigraphy";
+import { useProject } from "#services/project";
+import {
+  PageContainerNotWidthConstrained,
+  PageHeader,
+  PageSectionWidthConstrained,
+  PageText,
+} from "#styles/common";
+
+export const Route = createFileRoute("/project/rms/stratigraphy")({
+  component: RouteComponent,
+});
+
+function Content() {
+  const project = useProject();
+
+  return project.status && project.data ? (
+    <Stratigraphy
+      rmsData={project.data.config.rms}
+      projectReadOnly={!(project.lockStatus?.is_lock_acquired ?? false)}
+      isRmsProjectOpen={!!project.rmsExpiresAt}
+    />
+  ) : (
+    <PageSectionWidthConstrained>
+      <PageText>Project not set.</PageText>
+    </PageSectionWidthConstrained>
+  );
+}
+
+function RouteComponent() {
+  return (
+    <PageContainerNotWidthConstrained>
+      <PageSectionWidthConstrained>
+        <PageHeader>Stratigraphy</PageHeader>
+      </PageSectionWidthConstrained>
+
+      <Suspense fallback={<Loading />}>
+        <Content />
+      </Suspense>
+    </PageContainerNotWidthConstrained>
+  );
+}
diff --git a/frontend/src/routes/project/rms/wellbores.tsx b/frontend/src/routes/project/rms/wellbores.tsx
new file mode 100644
index 00000000..6b9e5552
--- /dev/null
+++ b/frontend/src/routes/project/rms/wellbores.tsx
@@ -0,0 +1,27 @@
+import { createFileRoute } from "@tanstack/react-router";
+
+import { useProject } from "#services/project";
+import {
+  PageHeader,
+  PageSectionWidthConstrained,
+  PageText,
+} from "#styles/common";
+
+export const Route = createFileRoute("/project/rms/wellbores")({
+  component: RouteComponent,
+});
+
+function RouteComponent() {
+  const project = useProject();
+
+  return (
+    <PageSectionWidthConstrained>
+      <PageHeader>Wellbores</PageHeader>
+      <PageText>
+        {project.status
+          ? "Wellbore content is coming soon."
+          : "Project not set."}
+      </PageText>
+    </PageSectionWidthConstrained>
+  );
+}
diff --git a/frontend/src/services/tasks.ts b/frontend/src/services/tasks.ts
index c571c8ca..468b82b2 100644
--- a/frontend/src/services/tasks.ts
+++ b/frontend/src/services/tasks.ts
@@ -51,9 +51,15 @@ export function useTaskList(): Task[] {
     },
     {
       id: "rms",
-      label: "Set RMS project and stratigraphy",
-      done: !!config.rms?.path && (zones.length > 0 || horizons.length > 0),
-      to: "/project/rms",
+      label: "Set RMS project",
+      done: !!config.rms?.path,
+      to: "/project/rms/overview",
+    },
+    {
+      id: "rms-stratigraphy",
+      label: "Set RMS stratigraphy",
+      done: zones.length > 0 || horizons.length > 0,
+      to: "/project/rms/stratigraphy",
     },
     {
       id: "mappings",
@@ -61,7 +67,7 @@ export function useTaskList(): Task[] {
       done:
         (zones.length > 0 || horizons.length > 0) &&
         [...zones, ...horizons].every((item) => mappedRmsIds.has(item.name)),
-      to: "/project/stratigraphy",
+      to: "/project/mappings/stratigraphy",
     },
   ];
 }