Old Tunnel State Park Bat Cave
- 10619 Old San Antonio Rd, Fredericksburg, TX 78624
- (866) 978-2287
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.
- Additional Info: Trail is open year-round from sunrise to 5pm. Bat viewing nightly May through October. For the most up-to-date emergence information, call 866-978-2287