This event has ended. Thanks for your support! Please join us on April 1, 2025, for our Wonders Down Under Dinner & Auction.
September 22, 2021
- 6:30 – 9:00 pm
- Bracken Cave
- 26101 FM 3009, San Antonio, TX 78266
- Raise funds to Stop 3009 Vulcan Quarry!
Experience one of the great wonders of the natural world: the spiraling emergence of over 15 million Mexican free-tailed bats—the largest bat colony on the planet—as they begin their evening hunt.

Proceeds from this fundraiser will support the ongoing battle against the 1,500-acre open-pit mine and quarry planned by Vulcan Materials between Bulverde and New Braunfels—just four miles north of Bracken Cave. Bat Conservation International will also receive a portion of the proceeds.
Hors d’oeuvres, beer, and wine begin at 6:30 p.m. A representative of Bracken Cave Preserve will give a bat talk at the cave, and the bats are expected to emerge at approximately 8:00 p.m. Tickets are $90 per person (plus fees). Directions and additional event details will be forwarded following ticket purchase.
Thank you to our sponsors who have graciously donated appetizers and locally grown and brewed flavors of the Hill Country: Dry Comal Creek Vineyards and Oak Valley Vineyard.
Please join us for an exciting evening you won’t soon forget!
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