The Boite and Piave drainage system belongs to the complex Dolomite Alps geology sequence made up of sedimentary rocks intruded with pyroclastic. These are found to overlay the thrust zones of igneous and meta sedimentary late Paleozoic rocks. Local intrusion of many types of shallow Mesozoic and tertiary rocks are also noted. The high rise domes of the mountains, primarily belong to the Mesozoic age and basically consist of dolomite with exposures of limestone, marlstone, claystone, siltstone, sandstone, tuff and conglomerates.