This post is a little late. I went camping over Labor Day weekend, which was a much needed and fun little vacation spent relaxing next to the camp fire and hiking.
I got the chance to see the Lava River Cave near Kendrick Peak just west of Flagstaff. It was a pretty amazing experience to walk through this 700, 000 year old tunnel. I unfortunately did not get many good pictures as the only light available was from my headlamp, or from residual light from others’ headlamps and flashlights. At points, you have to crouch low to get through, and other points the ceiling is a couple stories high. It was probably one of the coolest things I’ve seen.