Full Resolution Monday morning, we packed up the telescopes and got them ready for shipping back to the US. Diana had been telling us about one of her favorite places near Bogota -- a large underground cathedral made of salt outside of Zipaquira. Sure enough! This is the main hall, and it's about 900 feet underground. The walls are made of more-or-less pure salt. It's really spectacular. The cathedral is commonly called one of the major achievements of modern Colombian architecture.
