Other mountain ranges on the Seward Peninsula include the Bendeleben Mountains, Darby Mountains, and York Mountains. The Bendeleben Mountains exhibit evidence of recent faulting in the late Cenozoic, with the majority of tectonic deformation and mountain formation occurring in the Cretaceous, which is attributed to regional tectonic block rotation of the Bering plate in the Arctic.[5] The Lost Jim Lava Flow north of Kuzitrin Lake is a lava field formed roughly 1,000 to 2,000 years ago, which covers roughly 88 square miles (228 km2). Several geothermal hot springs are located throughout the peninsula, including Serpentine Hot Springs, Pilgrim Hot Springs, Granite Mountain, Elim, Clear Creek and Lava Creek.