diff --git a/packages/Sandblocks-Core/SBVisualization.extension.st b/packages/Sandblocks-Core/SBVisualization.extension.st
deleted file mode 100644
index 456c014e..00000000
--- a/packages/Sandblocks-Core/SBVisualization.extension.st
+++ /dev/null
@@ -1,10 +0,0 @@
-Extension { #name : #SBVisualization }
-
-{ #category : #'*Sandblocks-Core-geometry-override' }
-SBVisualization >> extent: aPoint [
-
-	super extent: aPoint.
-	self targetHeight: aPoint y.
-	self scaleY range: (0 to: aPoint y).
-	self visualize
-]