diff --git a/OpenSim/Region/CoreModules/World/Land/RegionCombinerModule.cs b/OpenSim/Region/CoreModules/World/Land/RegionCombinerModule.cs
index a6e3859473..eabdf51d48 100644
--- a/OpenSim/Region/CoreModules/World/Land/RegionCombinerModule.cs
+++ b/OpenSim/Region/CoreModules/World/Land/RegionCombinerModule.cs
@@ -478,7 +478,62 @@ namespace OpenSim.Region.CoreModules.World.Land
 
         public void PostInitialise()
         {
-            
+            if (!enabledYN)
+                return;
+
+            // Create a set of infinite borders around the whole aabb of the combined island.
+            lock (m_regions)
+            {
+                foreach (RegionConnections rconn in m_regions.Values)
+                {
+                    Vector3 offset = Vector3.Zero;
+                    rconn.RegionScene.BordersLocked = true;
+                    foreach (RegionData rdata in rconn.ConnectedRegions)
+                    {
+                        if (rdata.Offset.X > offset.X) offset.X = rdata.Offset.X;
+                        if (rdata.Offset.Y > offset.Y) offset.Y = rdata.Offset.Y;
+
+                    }
+
+                    lock (rconn.RegionScene.NorthBorders)
+                    {
+                        Border northBorder = new Border();
+                        northBorder.BorderLine = new Vector3(float.MinValue, float.MaxValue,
+                                                             offset.Y + (int) Constants.RegionSize); //<---
+                        northBorder.CrossDirection = Cardinals.N;
+                        rconn.RegionScene.NorthBorders.Add(northBorder);
+                    }
+
+                    lock (rconn.RegionScene.SouthBorders)
+                    {
+                        Border southBorder = new Border();
+                        southBorder.BorderLine = new Vector3(float.MinValue, float.MaxValue, 0); //--->
+                        southBorder.CrossDirection = Cardinals.S;
+                        rconn.RegionScene.SouthBorders.Add(southBorder);
+                    }
+
+                    lock (rconn.RegionScene.EastBorders)
+                    {
+                        Border eastBorder = new Border();
+                        eastBorder.BorderLine = new Vector3(float.MinValue, float.MaxValue, offset.Y + (int)Constants.RegionSize);
+                            //<---
+                        eastBorder.CrossDirection = Cardinals.E;
+                        rconn.RegionScene.EastBorders.Add(eastBorder);
+                    }
+
+                    lock (rconn.RegionScene.WestBorders)
+                    {
+                        Border westBorder = new Border();
+                        westBorder.BorderLine = new Vector3(float.MinValue, float.MaxValue, 0); //--->
+                        westBorder.CrossDirection = Cardinals.W;
+                        rconn.RegionScene.WestBorders.Add(westBorder);
+                    }
+
+
+
+                    rconn.RegionScene.BordersLocked = false;
+                }
+            }
         }
         public void OnFrame()
         {