diff --git a/OpenSim.Terrain.BasicTerrain/TerrainEngine.cs b/OpenSim.Terrain.BasicTerrain/TerrainEngine.cs
index e766f71982..a0f37f9507 100644
--- a/OpenSim.Terrain.BasicTerrain/TerrainEngine.cs
+++ b/OpenSim.Terrain.BasicTerrain/TerrainEngine.cs
@@ -120,6 +120,7 @@ namespace OpenSim.Terrain
                         resultText += "terrain seed <seed> - sets the random seed value to <seed>\n";
                         resultText += "terrain load <type> <filename> - loads a terrain from disk, type can be 'F32', 'F64' or 'IMG'\n";
                         resultText += "terrain save <type> <filename> - saves a terrain to disk, type can be 'F32' or 'F64'\n";
+                        resultText += "terrain save grdmap <filename> <gradient map> - creates a PNG snapshot of the region using a named gradient map\n";
                         resultText += "terrain rescale <min> <max> - rescales a terrain to be between <min> and <max> meters high\n";
                         resultText += "terrain erode aerobic <windspeed> <pickupmin> <dropmin> <carry> <rounds> <lowest>\n";
                         resultText += "terrain erode thermal <talus> <rounds> <carry>\n";
@@ -190,6 +191,10 @@ namespace OpenSim.Terrain
                                 writeToFileF64(args[2]);
                                 break;
 
+                            case "grdmap":
+                                exportImage(args[2], args[3]);
+                                break;
+
                             default:
                                 resultText = "Unknown image or data format";
                                 return false;