diff --git a/ground/desert.arc b/ground/desert.arc
index 981da984e..be9616d8e 100644
--- a/ground/desert.arc
+++ b/ground/desert.arc
@@ -9,5 +9,6 @@ no_pick 1
 slow_move 1
 is_wooded 1
 is_floor 1
+smoothlevel 9
 editable 8
 end
diff --git a/ground/hills.arc b/ground/hills.arc
index f1bbd51d5..90f714066 100644
--- a/ground/hills.arc
+++ b/ground/hills.arc
@@ -8,5 +8,6 @@ no_pick 1
 slow_move 3
 editable 8
 is_floor 1
+smoothlevel 30
 magicmap khaki
 end
diff --git a/ground/marsh.arc b/ground/marsh.arc
index 10d222037..ad880c282 100644
--- a/ground/marsh.arc
+++ b/ground/marsh.arc
@@ -9,6 +9,7 @@ no_pick 1
 is_water 1
 slow_move 15 
 is_wooded 1
+smoothlevel 7
 editable 8
 is_floor 1
 end
diff --git a/ground/steppe.arc b/ground/steppe.arc
index 28de9b5e4..75a8f63ba 100644
--- a/ground/steppe.arc
+++ b/ground/steppe.arc
@@ -5,5 +5,6 @@ slow_move 1
 is_wooded 1
 is_floor 1
 editable 8
+smoothlevel 35
 magicmap khaki
 end