The Rauhkofel or Rauchkofel ( m (AA), ) is a summit on the main crest of the Zillertal Alps, which forms the border between the Austrian state of Tyrol and the Italian province of South Tyrol. The name of the mountain (rugged peak) comes from the rugged appearance of the granite blocks that form the summit . The Rauhkofel rises above its neighbouring peaks on the main Zillertal ridge considerably and it is considered the best lookout mountain in the eastern Zillertal Alps. The east and south arêtes of the Rauhkofel are part of the main crest of the Zillertal Alps. Another ridge runs from the summit heading northwest; on its continuation at a distance of just under two kilometres is the Kleinspitze (3,172 m). North of the summit are the remnants of the Rauhkofelkees glacier. At the southwestern foot of the peak is the Waldner See, the largest lake in the Ahrntal valley.