diff --git a/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.gd b/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.gd
index 6a3f5f4..c63a304 100644
--- a/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.gd
+++ b/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.gd
@@ -3,7 +3,22 @@ class_name MetroConstructSimple extends GenerationFeature
 @export var min_height := 48.0
 @export var height_factor := 200.0
 
+@export var p_roof_carve := 0.2
+
 @onready var construct_box: CSGBox3D = %ConstructBox
+@onready var carve_pivot: CSGCombiner3D = %CarvePivot
+
+
+func generate_carve() -> void:
+	var carve_value := absf(sample_noise_at(global_position + Vector3(0, 65535, 0)))
+	if wrapf(carve_value * 65535.0, 0, 1) < p_roof_carve:
+		carve_pivot.position.y = construct_box.position.y
+
+		var rotate_value := absf(sample_noise_at(global_position + Vector3(0, 42069, 0)))
+		var rotations := floorf(wrapf(rotate_value * 65535, 0, 8))
+		carve_pivot.rotation.y = rotations * PI / 4
+	else:
+		carve_pivot.queue_free()
 
 
 func generate_feature(lod: WorldGen.LOD) -> void:
@@ -13,3 +28,4 @@ func generate_feature(lod: WorldGen.LOD) -> void:
 			var height := value * height_factor + min_height
 			construct_box.position.y = height / 2
 			construct_box.size.y = height
+			generate_carve()
diff --git a/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.tscn b/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.tscn
index 2e88814..6a703f5 100644
--- a/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.tscn
+++ b/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.tscn
@@ -42,3 +42,12 @@ size = Vector3(48, 48, 48)
 script = ExtResource("2_74b57")
 lod = 2
 metadata/_custom_type_script = "uid://cv0o1lirqeq44"
+
+[node name="CarvePivot" type="CSGCombiner3D" parent="ConstructBox"]
+unique_name_in_owner = true
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 24, 0)
+operation = 2
+
+[node name="CarveBox" type="CSGBox3D" parent="ConstructBox/CarvePivot"]
+transform = Transform3D(1, 0, 0, 0, 0.70710677, -0.70710677, 0, 0.70710677, 0.70710677, 0, 0, 24)
+size = Vector3(100, 48, 100)