diff --git a/mods/cnc/rules/trees.yaml b/mods/cnc/rules/trees.yaml
index 58185bd533..fd712d16b6 100644
--- a/mods/cnc/rules/trees.yaml
+++ b/mods/cnc/rules/trees.yaml
@@ -22,24 +22,41 @@ SPLITBLUE:
 
 ROCK1:
 	Inherits: ^Rock
-
+	Building:
+		Footprint: __ xx
+		
 ROCK2:
 	Inherits: ^Rock
+	Building:
+		Footprint: xx_
+		Dimensions: 3,1
 
 ROCK3:
 	Inherits: ^Rock
 
 ROCK4:
 	Inherits: ^Rock
+	Building:
+		Footprint: x
+		Dimensions: 1,1
 
 ROCK5:
 	Inherits: ^Rock
+	Building:
+		Footprint: x_
+		Dimensions: 2,1
 
 ROCK6:
 	Inherits: ^Rock
+	Building:
+		Footprint: ___ xxx
+		Dimensions: 3,2
 
 ROCK7:
 	Inherits: ^Rock
+	Building:
+		Footprint: xxxx
+		Dimensions: 4,1
 
 T01:
 	Inherits: ^Tree
diff --git a/mods/cnc/tilesets/desert.yaml b/mods/cnc/tilesets/desert.yaml
index a53857d2cf..c7d700f405 100644
--- a/mods/cnc/tilesets/desert.yaml
+++ b/mods/cnc/tilesets/desert.yaml
@@ -152,6 +152,7 @@ Templates:
 			0: Rock
 			2: Rock
 			3: Rock
+			4: Rock
 			5: Rock
 	Template@15:
 		Id: 15
@@ -321,8 +322,8 @@ Templates:
 		Image: s23
 		Size: 3,2
 		Tiles:
-			0: Rock
 			1: Rock
+			2: Rock
 			3: Rock
 			4: Rock
 	Template@36:
@@ -443,6 +444,7 @@ Templates:
 		Size: 2,2
 		Tiles:
 			0: Rock
+			1: Rock
 			2: Rock
 			3: Rock
 	Template@50:
diff --git a/mods/cnc/tilesets/snow.yaml b/mods/cnc/tilesets/snow.yaml
index 5491867db1..30f080d1af 100644
--- a/mods/cnc/tilesets/snow.yaml
+++ b/mods/cnc/tilesets/snow.yaml
@@ -262,6 +262,7 @@ Templates:
 			0: Rock
 			2: Rock
 			3: Rock
+			4: Rock
 			5: Rock
 	Template@15:
 		Id: 15
@@ -431,8 +432,8 @@ Templates:
 		Image: s23
 		Size: 3,2
 		Tiles:
-			0: Rock
 			1: Rock
+			2: Rock
 			3: Rock
 			4: Rock
 	Template@36:
@@ -553,6 +554,7 @@ Templates:
 		Size: 2,2
 		Tiles:
 			0: Rock
+			1: Rock
 			2: Rock
 			3: Rock
 	Template@50:
@@ -677,6 +679,7 @@ Templates:
 		Tiles:
 			0: Rock
 			1: Rock
+			2: Rock
 	Template@88:
 		Id: 88
 		Image: sh6
diff --git a/mods/cnc/tilesets/temperat.yaml b/mods/cnc/tilesets/temperat.yaml
index 3ece050dbb..adb18cb701 100644
--- a/mods/cnc/tilesets/temperat.yaml
+++ b/mods/cnc/tilesets/temperat.yaml
@@ -262,6 +262,7 @@ Templates:
 			0: Rock
 			2: Rock
 			3: Rock
+			4: Rock
 			5: Rock
 	Template@15:
 		Id: 15
@@ -431,8 +432,8 @@ Templates:
 		Image: s23
 		Size: 3,2
 		Tiles:
-			0: Rock
 			1: Rock
+			2: Rock
 			3: Rock
 			4: Rock
 	Template@36:
@@ -553,6 +554,7 @@ Templates:
 		Size: 2,2
 		Tiles:
 			0: Rock
+			1: Rock
 			2: Rock
 			3: Rock
 	Template@50:
diff --git a/mods/cnc/tilesets/winter.yaml b/mods/cnc/tilesets/winter.yaml
index 9ccbedc55d..b7941b4363 100644
--- a/mods/cnc/tilesets/winter.yaml
+++ b/mods/cnc/tilesets/winter.yaml
@@ -262,6 +262,7 @@ Templates:
 			0: Rock
 			2: Rock
 			3: Rock
+			4: Rock
 			5: Rock
 	Template@15:
 		Id: 15
@@ -431,8 +432,8 @@ Templates:
 		Image: s23
 		Size: 3,2
 		Tiles:
-			0: Rock
 			1: Rock
+			2: Rock
 			3: Rock
 			4: Rock
 	Template@36:
@@ -553,6 +554,7 @@ Templates:
 		Size: 2,2
 		Tiles:
 			0: Rock
+			1: Rock
 			2: Rock
 			3: Rock
 	Template@50: