The ground in Tsochen is mainly made up of the Mt. Touke sandstone and shale stratum. This stratum has a very soft, loose structure, and this is why the badlands terrain is especially well developed here.
左鎮鄉的地層主要為頭嵙山層之砂岩與頁岩所構成，由於地質特別鬆軟，惡地形也特別發達。