Fredericksburg - Old Tunnel State Park

An old railroad tunnel provides a seasonal home for around 3 million bats. Join us for a bat emergence program to learn more about these flying mammals and to watch them embark on their nightly search for food and water!

Things to Do
Besides viewing the bats in the summer, you can picnic, hike, bird-watch, stargaze and look for wildlife year-round. Explore our short (less than 1/2 mile) nature trail and look for wildlife, peer into the tunnel, and read signs on bat lore and railroad history.

Bring your own drinking water, as water is not available in the park.

Old Tunnel is home to up to 3 million Mexican free-tailed bats and 3,000 cave myotis bats from May through October. We open the park after 5 p.m. for bat viewing and programs (depending on staff availability) while the bats are here. Bat viewing tickets are required after 5 p.m.