2013 Map of Bear Trap Cave

About this map

Craters of the Moon National Preserve dominates this southern Idaho landscape, revealing the complex volcanic geology of Blaine County. This modern survey illustrates a high-desert environment defined by basaltic formations and subterranean features, most notably the namesake Bear Trap Cave and the nearby Bear Trap Lava Tube. These geologic structures, along with the expansive Wapi Flow to the southeast, represent the unique volcanic activity that has shaped the Snake River Plain. Human interaction with this isolated terrain is sparse but evident, marked by the presence of Lulu Reservoir and the Bear Trap Airport landing strip. Local access is primarily maintained via the unpaved corridor of Bear Trap Rd, which cuts through the sagebrush and lava fields, providing a point of entry for researchers and explorers of the basaltic Split Butte and the surrounding wilderness.