The prehistoric house set is a variety of buildings that allow you to make custom buildings. There are various recipes for them, mainly consisting of medium wood.
Wall ----> Prehistoric house edge,door,corner,windorcorner,windowedge
Medium Leaves (Building) OR Palm Leaves (Building) = Prehistoric House Roofs
With these recipes you can make anything, a house as big as the plateaus on mainland, or maybe a shop! The possibilities are endless.