Bracken Cave Preserve
Jonathan Alonzo

A life-changing experience

Located less than 20 miles from downtown San Antonio, Texas, Bracken Cave Preserve is the largest bat colony in the world — home to over 20 million Mexican free-tailed bats (Tadarida brasiliensis). Their nightly emergence is a jaw-dropping, life-changing experience — one that can become a bucket-list item for nature lovers worldwide that inspires people to support bat conservation.

We are committed to catalyzing the experience of Bracken bat flights to teach the public about the ecological and economic value of bats — sustainably increasing access for visitors and protecting a magnificent colony of Mexican free-tailed bats.


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Preserving Bracken Cave and the largest bat colony in the world

In 2014, working with The Nature Conservancy, the City of San Antonio, Bexar County, and many regional donors, we acquired 1,500 acres of land threatened by development. Last year, we welcomed over 5,000 visitors and volunteers, but we need to improve the preserve’s infrastructure to continue showcasing this incredible wildlife destination.