The mighty ramparts of Creta della Chianevate (2769 m. asl) and of Mount Coglians (2780 m asl) are the highest peaks of the Carnic Alps. The southernmost glacier of Austria, the Eiskar, is here as well. The Chianevate formed in the Devonian (415-360 million years ago), over a time span of 30 million years. The lower part of the wall has evident layers, deposited in a relatively shallow sea. On the other hand, in the upper part there are massive rocks representing the actual body of a growing reef. The fold in the middle part of the wall is related to more recent tectonic movements. To the north, the reddish rock of Mount Rauchkofel is typical of open sea deposits.