Old Tunnel State Park (Bat Cave)
An abandoned railroad tunnel that is home to millions of Mexican free-tailed bats every May through October. Located 10.5 miles south of Highway 290 on the Old San Antonio Road. The upper viewing deck is open nightly at no charge. The lower viewing area is open on Thursday through Sunday evenings for special educational presentations for a $5 per person fee.
Please call for the current bat emergence time: (866) 978-2287.