diff --git a/Assets/_Content/Models/Environments/Unabomber/ServerRack/Prefabs/ServerRack.prefab b/Assets/_Content/Models/Environments/Unabomber/ServerRack/Prefabs/ServerRack.prefab
index 11510d5e..9cbd218c 100644
--- a/Assets/_Content/Models/Environments/Unabomber/ServerRack/Prefabs/ServerRack.prefab
+++ b/Assets/_Content/Models/Environments/Unabomber/ServerRack/Prefabs/ServerRack.prefab
@@ -11,6 +11,7 @@ GameObject:
   - component: {fileID: 778714341242745966}
   - component: {fileID: 8799689663269280170}
   - component: {fileID: 4504513483669768543}
+  - component: {fileID: 6514842037794050245}
   m_Layer: 0
   m_Name: ServerRack
   m_TagString: Untagged
@@ -90,3 +91,24 @@ MeshRenderer:
   m_SortingOrder: 0
   m_MaskInteraction: 0
   m_AdditionalVertexStreams: {fileID: 0}
+--- !u!65 &6514842037794050245
+BoxCollider:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 3796740323206560363}
+  m_Material: {fileID: 0}
+  m_IncludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_ExcludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_LayerOverridePriority: 0
+  m_IsTrigger: 0
+  m_ProvidesContacts: 0
+  m_Enabled: 1
+  serializedVersion: 3
+  m_Size: {x: 0.00647058, y: 0.02, z: 0.0064705997}
+  m_Center: {x: 0, y: 0, z: 0}
diff --git a/Assets/_Content/Models/Environments/Unabomber/WoodenCabin/Prefabs/cabin.prefab b/Assets/_Content/Models/Environments/Unabomber/WoodenCabin/Prefabs/cabin.prefab
index 90209450..99649d64 100644
--- a/Assets/_Content/Models/Environments/Unabomber/WoodenCabin/Prefabs/cabin.prefab
+++ b/Assets/_Content/Models/Environments/Unabomber/WoodenCabin/Prefabs/cabin.prefab
@@ -11,6 +11,7 @@ GameObject:
   - component: {fileID: 6589306329274510902}
   - component: {fileID: 796089597655267569}
   - component: {fileID: 4133317196450489684}
+  - component: {fileID: 6659858383691917042}
   m_Layer: 0
   m_Name: Base
   m_TagString: Untagged
@@ -90,6 +91,28 @@ MeshRenderer:
   m_SortingOrder: 0
   m_MaskInteraction: 0
   m_AdditionalVertexStreams: {fileID: 0}
+--- !u!64 &6659858383691917042
+MeshCollider:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 2974699667103267937}
+  m_Material: {fileID: 0}
+  m_IncludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_ExcludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_LayerOverridePriority: 0
+  m_IsTrigger: 0
+  m_ProvidesContacts: 0
+  m_Enabled: 1
+  serializedVersion: 5
+  m_Convex: 0
+  m_CookingOptions: 30
+  m_Mesh: {fileID: 3909233067320746374, guid: 9ed825523b5b29b41b3c33635d4bd7f7, type: 3}
 --- !u!1 &3399853437845071380
 GameObject:
   m_ObjectHideFlags: 0
@@ -101,6 +124,7 @@ GameObject:
   - component: {fileID: 1860836164064319882}
   - component: {fileID: 761315074788654726}
   - component: {fileID: 7177216591892795590}
+  - component: {fileID: 8158249036517933301}
   m_Layer: 0
   m_Name: Door
   m_TagString: Untagged
@@ -180,6 +204,28 @@ MeshRenderer:
   m_SortingOrder: 0
   m_MaskInteraction: 0
   m_AdditionalVertexStreams: {fileID: 0}
+--- !u!64 &8158249036517933301
+MeshCollider:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 3399853437845071380}
+  m_Material: {fileID: 0}
+  m_IncludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_ExcludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_LayerOverridePriority: 0
+  m_IsTrigger: 0
+  m_ProvidesContacts: 0
+  m_Enabled: 1
+  serializedVersion: 5
+  m_Convex: 0
+  m_CookingOptions: 30
+  m_Mesh: {fileID: 2619086233303812490, guid: 9ed825523b5b29b41b3c33635d4bd7f7, type: 3}
 --- !u!1 &7844949156060570581
 GameObject:
   m_ObjectHideFlags: 0
diff --git a/Assets/_Content/Scripts/PortalExitMarker.cs b/Assets/_Content/Scripts/PortalExitMarker.cs
index 11ea1fd0..58a0be44 100644
--- a/Assets/_Content/Scripts/PortalExitMarker.cs
+++ b/Assets/_Content/Scripts/PortalExitMarker.cs
@@ -57,7 +57,7 @@ public sealed class PortalExitMarker : MonoBehaviour
     }
     private void LateUpdate()
     {
-        if (!meadow || !meadow.Following || period <= 0) return;
+        if (!meadow || !meadow.Endless || period <= 0) return;
         float poolPeriod = period * 3;
         foreach (Transform marker in markers)
         {
diff --git a/Assets/_Content/Scripts/PortalMeadow.cs b/Assets/_Content/Scripts/PortalMeadow.cs
index 80d38bae..00f4130f 100644
--- a/Assets/_Content/Scripts/PortalMeadow.cs
+++ b/Assets/_Content/Scripts/PortalMeadow.cs
@@ -29,8 +29,8 @@ public sealed class PortalMeadow : MonoBehaviour
     [SerializeField, Min(1)] private float boundsPadding = 128;
     [Tooltip("Rendering layers of every generated PortalB renderer, so lights can be restricted to this world.")]
     [SerializeField] private RenderingLayerMask renderingLayers = 1u;
-    [Tooltip("While not following the player, the bend is computed from this frame (e.g. the portal, looking along its forward axis) " +
-        "instead of the camera, so it stays aligned and still behind the portal.")]
+    [Tooltip("Entrance (e.g. the portal). While not following the player, the bend is computed from this frame (looking along its forward axis) " +
+        "instead of the camera, and the disk is centred on it, so everything stays aligned and still behind the portal.")]
     [SerializeField] private Transform bendAnchor;
     [Tooltip("Blend from the anchor frame to the camera once the player follows.")]
     [SerializeField, Min(0)] private float bendFadeDuration = 1.5f;
@@ -65,7 +65,7 @@ public sealed class PortalMeadow : MonoBehaviour
     public bool Endless => endless && Application.isPlaying;
     /// <summary>Endless and currently recentering on the player (see SetFollowPlayer).</summary>
     public bool Following => Endless && followPlayer;
-    public Vector3 SurfaceCenter => Following && capturedPlayer ? surfaceCenter : Center;
+    public Vector3 SurfaceCenter => Endless ? surfaceCenter : Center;
 
     public void ConfigureRegion(Material target)
     {
@@ -112,9 +112,11 @@ public sealed class PortalMeadow : MonoBehaviour
     {
         frameBlend = !Following ? 0 : bendFadeDuration > 0 ? Mathf.MoveTowards(frameBlend, 1, Time.deltaTime / bendFadeDuration) : 1;
         surfaceCenter = Center;
-        if (Following && capturedPlayer)
+        // Before the crossing, the disk is already centred on the entrance, so following the player does not jump.
+        Transform focus = !Endless ? null : Following ? capturedPlayer : bendAnchor;
+        if (focus)
         {
-            Vector3 p = transform.InverseTransformPoint(capturedPlayer.position);
+            Vector3 p = transform.InverseTransformPoint(focus.position);
             surfaceCenter.x = p.x; surfaceCenter.z = p.z;
         }
         if (groundCollider) groundCollider.center = SurfaceCenter + Vector3.down * (colliderThickness * 0.5f);
@@ -129,7 +131,7 @@ public sealed class PortalMeadow : MonoBehaviour
         {
             Transform tile = tiles[i];
             Vector3 p = tile.localPosition;
-            if (Following)
+            if (Endless)
             {
                 p.x += Mathf.Floor((SurfaceCenter.x - p.x - tileSize.x * 0.5f + patchSize.x * 0.5f) / patchSize.x) * patchSize.x;
                 p.z += Mathf.Floor((SurfaceCenter.z - p.z - tileSize.y * 0.5f + patchSize.y * 0.5f) / patchSize.y) * patchSize.y;
diff --git a/Assets/_Content/Scripts/PortalServerGrid.cs b/Assets/_Content/Scripts/PortalServerGrid.cs
index 04066d34..c9c9f8e3 100644
--- a/Assets/_Content/Scripts/PortalServerGrid.cs
+++ b/Assets/_Content/Scripts/PortalServerGrid.cs
@@ -32,6 +32,8 @@ public sealed class PortalServerGrid : MonoBehaviour
     private bool rebuild;
     private readonly Dictionary<Material, Material> curvedMaterials = new Dictionary<Material, Material>();
     private readonly List<Transform> servers = new List<Transform>();
+    private readonly List<Collider> colliders = new List<Collider>();
+    private bool collidersEnabled = true;
     private float wrapExtent;
     // Distance between the centres of two repeated server clusters.
     public float RepetitionPeriod => wrapExtent * 2;
@@ -63,6 +65,8 @@ public sealed class PortalServerGrid : MonoBehaviour
         if (!meadow) meadow = GetComponent<PortalMeadow>();
         if (!meadow) return;
         SyncBend();
+        // Servers are invisible until the player crossed the portal, so they only block once the meadow follows the player.
+        SetCollidersEnabled(!meadow.Endless || meadow.Following);
         if (!rebuild && lastSize == meadow.Size && lastCenter == meadow.Center && lastEndless == meadow.Endless) return;
         rebuild = false;
         lastSize = meadow.Size;
@@ -77,7 +81,7 @@ public sealed class PortalServerGrid : MonoBehaviour
     }
     private void LateUpdate()
     {
-        if (!meadow || !meadow.Following || wrapExtent <= 0) return;
+        if (!meadow || !meadow.Endless || wrapExtent <= 0) return;
         Vector3 centre = meadow.SurfaceCenter;
         float period = wrapExtent * 2;
         foreach (Transform server in servers)
@@ -89,6 +93,12 @@ public sealed class PortalServerGrid : MonoBehaviour
             server.localPosition = p;
         }
     }
+    private void SetCollidersEnabled(bool enabled)
+    {
+        if (collidersEnabled == enabled) return;
+        collidersEnabled = enabled;
+        foreach (Collider collider in colliders) if (collider) collider.enabled = enabled;
+    }
     [ContextMenu("Regenerate server rings")]
     private void Regenerate() { rebuild = true; }
 
@@ -104,6 +114,7 @@ public sealed class PortalServerGrid : MonoBehaviour
         foreach (Material material in curvedMaterials.Values) if (material) Release(material);
         curvedMaterials.Clear();
         servers.Clear();
+        colliders.Clear();
     }
     private GameObject CreateServer()
     {
@@ -182,6 +193,9 @@ public sealed class PortalServerGrid : MonoBehaviour
             servers.Add(server.transform);
         }
         if (count == 0) { Clear(); return; }
+        colliders.AddRange(generated.GetComponentsInChildren<Collider>(true));
+        collidersEnabled = true; // As instantiated from the prefab.
+        SetCollidersEnabled(!meadow.Endless || meadow.Following);
         SyncBend();
         generated.SetActive(true);
     }