diff --git a/dimensions.lua b/dimensions.lua
index 43dd83b..b67ab3c 100644
--- a/dimensions.lua
+++ b/dimensions.lua
@@ -193,7 +193,8 @@ multidimensions.register_dimension("ice_age",{
 multidimensions.register_dimension("prehistoric_australia",{
 
   ground_ores = {
-  	["default:dry_grass_1"] = 25,
+	["default:dry_grass_1"] = 25,
+	["default:dry_shrub"] = 30000,
 	["time_travel:tree"] = 30000,
   },
   stone_ores = table.copy(ores),     	     -- works as above, but in stone