Lamprechtsofen (also called Lamprechtshöhle, Lamprechtsofenhöhle or, together with a connected cave, Lamprechtsofen-Vogelschacht) is a limestone karst river cave in Austria. With a depth of 1,735 m (5,692 ft), it is one of the deepest caves in the world. Before the discovery of the Krubera Cave in Georgia, it was the deepest-known cave in the world. Lamprechtsofen is located 2 km (1.2 mi) northwest of Weißbach bei Lofer (Salzburg), Austria, in the Leogang Mountains.