Caves & Caverns

September 6, 2023: Experience the spiraling emergence of over 15 million Mexican free-tailed bats—the largest bat colony on the planet—as they begin their evening hunt.

September 21, 2022: Experience the spiraling emergence of over 15 million Mexican free-tailed bats—the largest bat colony on the planet—as they begin their evening hunt.

September 22, 2021: Experience the spiraling emergence of over 15 million Mexican free-tailed bats—the largest bat colony on the planet—as they begin their evening hunt.

Landowners discover new chamber in Double Decker Cave, in Comal County, Texas between proposed Vulcan quarry site and Natural Bridge Caverns.

September 11, 2019: Experience the spiraling emergence of over 15 million Mexican free-tailed bats—the largest bat colony on the planet—as they begin their evening hunt.

Helpful resources, documents, and tools for protecting our families, preserving our beautiful Hill Country environment, and fighting the proposed Vulcan Materials quarry in Comal County.