Have you heard about the Cueva de los Cristales in Mexico? David showed me a video on the BBC’s site, and I was awestruck. This cave holds unbelievably massive gypsum crystal formations, unlike any ever seen. I took a few screen captures, but you should just watch the video. I mean, imagine, being a worker with the Naica Silver mine, breaking through a cavern and being greeted by the site of your life! Like Indiana Jones or (due to it’s killer conditions) Superman. At a boiling 135 degrees and 100% humidity, it may look like heaven, but feels like Hell. I guess they won’t be selling tickets.