Craters of the Moon National Monument: Crazy Rocks and Volcanic Mounds

Below: Crazy Witch Lady Rock  At least I could see it live.

blobs of lava that hardened

 Some of the rocks were really ai ai rocks, meaning it hurt to walk on them.  Below is some kind of hardened lava flows.

The last volcanic activity was about 2000 years ago, with activity about every 2000 years startijg 15000 years ago.