Dave and I had the opportunity to hike through a lava tube in Flagstaff. I get claustrophobic and was worried about going down in there but it actually wasn't bad at all. It opens up and it one spot the ceiling is 30 feet high. When we got down there we turned off our flashlights and you could feel the darkness. I couldn't even see my hand if front of my face.
Then we went and rode the ski lift at Snow Bowl. The views were breathtaking. The entire ride was 50 minutes and it was so relaxing.