The Robber Baron Open House is Saturday, November 11, 2017 from 9:00 am to 3:00 pm and we hope you can attend! Even though advance reservations are now full, they are NOT required to take the regular self-guided tour to explore portions of the cave on your own. Just show up when convenient, sign in, get a number and when your number is called, your party can get their gear and go in. While you are waiting, there will be booths to visit with information from the Edwards Aquifer Authority, Bat Conservation International, San Antonio Master Naturalists, and others. Also, there will be a food truck from Cheezy Jane’s during lunchtime. As always, sturdy shoes and clothes you don’t mind getting dirty are highly recommended. Admission is free, but a $5/person donation is requested to support the cave. So, come and check out a wild cave right in the heart of San Antonio!