The Desko Mountains are a west-northwest–east-southeast mountain range on Rothschild Island, off northwest Alexander Island. The range spans 20 nautical miles (37 km) from Bates Peak to Overton Peak and rises to about 1,000 metres (3,300 ft) at Enigma Peak, Fournier Ridge. Other mountains included are Goward Peak, Schenck Peak, Morrill Peak and Thuma Peak.