Roadtrip Day 264 of 365!! Today we visited Craters of the Moon National Monument! It’s such an amazing place filled with lava rock and cool rock formations. They have two caves to explore for free on your own, all you need is a free issued permit from the visitor center. We spent the night in the campground surrounded by lava rock and the next day we went exploring. We loved the Indian Tunnel cave with the giant skylights, and we loved walking inside the mini volcanoes and looking straight down