The Jones Mountains are an isolated group of mountains, trending generally east-west for 43?km (27 mi), situated on the Eights Coast, Ellsworth Land, about 80?km (50 mi) south of Dustin Island in Antarctica. The charts of the USAS, 1939-41, show mountains in this approximate location and relationship to Dustin and Thurston Islands, indicating they were sighted in the flight from the ship Bear, February 27, 1940.