The Grotto meets on the 2nd and 4th Monday of every month at 7:00 pm at Chester's Hamburgers.  Chester's is located at US 281 and Mecca at the Thousand Oaks exit.  Grotto meetings include project updates, club business, recent trip reports and cave-related programs by members and guests.

Bexar Facts is the official Grotto newsletter.

Membership in the Bexar Grotto is open to anyone, though membership in the NSS is encouraged.  Individual's dues are five dollars per calendar year.  The whole family can join for just one dollar more!