diff --git a/ground/Pstone/pstone_1.arc b/ground/Pstone/pstone_1.arc
index 5ba4e318a..b8d5272bf 100644
--- a/ground/Pstone/pstone_1.arc
+++ b/ground/Pstone/pstone_1.arc
@@ -5,5 +5,6 @@ color_fg brown
 color_bg khaki
 no_pick 1
 is_floor 1
+smoothlevel 7
 editable 8
 end
diff --git a/ground/Wood/evergreens.arc b/ground/Wood/evergreens.arc
index 1c6fc29d8..1137b03ac 100644
--- a/ground/Wood/evergreens.arc
+++ b/ground/Wood/evergreens.arc
@@ -9,5 +9,5 @@ slow_move 3
 is_wooded 1
 editable 8
 is_floor 1
-smoothlevel 12
+smoothlevel 75
 end
diff --git a/ground/Wood/tree_1.arc b/ground/Wood/tree_1.arc
index 6afef83fb..4b91bd645 100644
--- a/ground/Wood/tree_1.arc
+++ b/ground/Wood/tree_1.arc
@@ -6,5 +6,5 @@ no_pick 1
 color_fg green
 editable 8
 is_floor 1
-smoothlevel 10
+smoothlevel 75
 end
diff --git a/ground/Wood/tree_2.arc b/ground/Wood/tree_2.arc
index 11464b761..172522ed7 100644
--- a/ground/Wood/tree_2.arc
+++ b/ground/Wood/tree_2.arc
@@ -6,5 +6,5 @@ is_wooded 1
 color_fg green
 editable 8
 is_floor 1
-smoothlevel 10
+smoothlevel 75
 end
diff --git a/ground/Wood/treed_hills.arc b/ground/Wood/treed_hills.arc
index dc857f8e1..d1b50344b 100644
--- a/ground/Wood/treed_hills.arc
+++ b/ground/Wood/treed_hills.arc
@@ -9,5 +9,6 @@ is_wooded 1
 slow_move 5
 editable 8
 is_floor 1
+smoothlevel 30
 magicmap green
 end
diff --git a/ground/Wood/woods_1.arc b/ground/Wood/woods_1.arc
index 96fa57e60..1811b5e98 100644
--- a/ground/Wood/woods_1.arc
+++ b/ground/Wood/woods_1.arc
@@ -9,5 +9,5 @@ slow_move 1
 is_wooded 1
 editable 8
 is_floor 1
-smoothlevel 12
+smoothlevel 75
 end
diff --git a/ground/Wood/woods_2.arc b/ground/Wood/woods_2.arc
index 5eb384a5a..d6a23875d 100644
--- a/ground/Wood/woods_2.arc
+++ b/ground/Wood/woods_2.arc
@@ -10,5 +10,5 @@ slow_move 1
 is_wooded 1
 editable 8
 is_floor 1
-smoothlevel 12
+smoothlevel 75
 end
diff --git a/ground/Wood/woods_3.arc b/ground/Wood/woods_3.arc
index bcf184881..1a35ad55f 100644
--- a/ground/Wood/woods_3.arc
+++ b/ground/Wood/woods_3.arc
@@ -11,5 +11,5 @@ is_floor 1
 color_fg green
 editable 8
 visibility 100
-smoothlevel 12
+smoothlevel 75
 end
diff --git a/ground/hillsrocky.arc b/ground/hillsrocky.arc
index ad0ba16c4..073543251 100644
--- a/ground/hillsrocky.arc
+++ b/ground/hillsrocky.arc
@@ -9,5 +9,6 @@ no_pick 1
 slow_move 2
 editable 8
 is_floor 1
+smoothlevel 30
 magicmap brown
 end
diff --git a/ground/lava.arc b/ground/lava.arc
index 99e39b96a..72e1a96e1 100644
--- a/ground/lava.arc
+++ b/ground/lava.arc
@@ -13,6 +13,7 @@ lava.113
 lava.114
 lava.115
 mina
+smoothlevel 80
 color_fg yellow
 color_bg red
 speed 0.2
@@ -42,6 +43,7 @@ color_fg yellow
 color_bg red
 speed 0.2
 no_pick 1
+smoothlevel 80
 attacktype 4
 hp 1
 dam 3
diff --git a/ground/new/dunes.arc b/ground/new/dunes.arc
index a1593172c..60ab98a7c 100644
--- a/ground/new/dunes.arc
+++ b/ground/new/dunes.arc
@@ -8,6 +8,7 @@ color_bg yellow
 no_pick 1
 slow_move 1
 is_wooded 1
+smoothlevel 30
 is_floor 1
 editable 8
 end