HOW TO JOIN

If you’re interested in caves and caving, come to a meeting. Caving is open to anyone with a passion for caves and exploration. Please note the following membership requirements:

  • Voting Eligibility: Your Grotto membership dues must be current to participate in official votes.
  • TCMA Cave Trips: Access to certain Texas Cave Management Association (TCMA) properties requires an active TCMA membership.

Dues

Bexar Grotto membership is incredibly affordable:

  • Individual: $5 / year
  • Family: $7 / year

For your convenience, we provided multiple options for paying and renewing Grotto dues.

Online
Pay securely online through Zeffy.

In person
Pay the Treasurer at a Grotto meeting
with cash or check.

Mail a check to
Bexar Grotto Treasurer
281 Jackson Keller PO Box 420
San Antonio, TX 78213

Donate

If you would like to donate to the Grotto, your donation directly funds the exploration, study, and conservation of caves in Bexar County and beyond.

When you give, you support:

  • Safe Exploration & Training: Funding specialized gear and hands-on training for responsible caving.
  • Scientific Research: Powering critical survey and mapping projects to document underground wilderness.
  • Habitat Restoration: Organizing cave clean-ups to protect fragile, subterranean ecosystems.
  • Community Education: Teaching the public about the vital role caves play in our environment.