City cliff tile path

[Pyrodactyl]

Hmmm.. yesterday i just tried to replace the Cityscape cliff tiles, but simply i couldnt.

I found three paths for it, none worked.
Doodads\Cityscape\Structures\Tavern\CityBuildings2.blp
Textures\City_CliffSquareTiles.blp
ReplaceableTextures\Cliffs\Y_Cliff1.blp

If anyone ever edited cliff tiles then could you tell me the valid path?