The Heaven-Reaching Pillars are a series of mountains in Penoccident. They comprise a unique mountainous region with several pillar-like mountain formations that rise up beyond a thousand meters. Natives have even created bridges between some of these, so that the area is traversable. At the ground level, the forest is dense and full of dangerous wildlife, which is why the natives rarely venture there.
References[]
http://www.giantitp.com/forums/showsinglepost.php?p=18574270&postcount=41