2020 Map of Bear Trap Cave

About this map

Craters of the Moon National Preserve dominates this volcanic landscape, showcasing the stark geomorphology of the Snake River Plain. The terrain is defined by dramatic basaltic features, including the Wapi Flow in the southeast and the distinctive Split Butte to the west. Central to this map's geological interest is the Bear Trap Lava Tube, a significant subterranean formation indicative of the region's intense eruptive history. Human activity in this desolate stretch of Blaine County is sparse, represented primarily by the Minidoka to Arco Rd and the isolated Bear Trap Airport. The presence of Lulu Reservoir provides a rare point of surface water management in an otherwise arid and porous volcanic environment, where ancient lava tubes and expansive flows create a complex topographical surface.