Underworld ice cavern

As I promised in my SPS post, I am now posting photos of the ice in the lava tubes from Craters of the Moon NM. The tubes have no sunlight and are as dark as a cave, I was really excited that the photos actually turned out as awesome as they did. As you can tell, the ground is really rough and having to crawl across rocks is hard enough and even more so with ice covering all of them.