The Vorab is a mountain of the Glarus Alps, located on the border between the cantons of Glarus and Graubünden. The summit (3,028 metres) is also named Bündner Vorab to distinguish it from a lower summit (3,018 metres) named Glarner Vorab. A glacier runs down its eastern face where the valley continues a moderate inclination down towards Flims, where it can be seen for example from Caumasee. It cannot be seen from the adjacend municipalities on the south though.