Fee: No entrance fee. Bat-viewing tickets are required after 5 p.m., May 1 through Oct. 31.
About this park
An old railroad tunnel at Old Tunnel State Park provides a seasonal home for around 3 million bats. Rangers lead bat emergence programs, where visitors watch the bats leave on their nightly search for food and water. The park also has a short nature trail of less than half a mile. Water is not available in the park, so bring your own drinking water.
Old Tunnel State Park FAQ
Where is Old Tunnel State Park located?
Old Tunnel State Park is in Fredericksburg, Texas, at 10619 Old San Antonio Road. GPS coordinates: 30.10108, -98.8207. Get directions.
Is there an entrance fee at Old Tunnel State Park?
No entrance fee. Bat-viewing tickets are required after 5 p.m., May 1 through Oct. 31. Fees can change by season, so confirm with the park before you go.
How do I contact Old Tunnel State Park?
You can call (866) 978-2287. The park office can confirm RV site availability, hookups, length limits and current conditions.
Are there RV campgrounds near Old Tunnel State Park?
Yes. The closest RV-friendly campgrounds listed on ParkedRV are:
- Willis Creek (94.0 mi, reservable)
- Taylor (95.1 mi, reservable)
- Union Grove (95.1 mi, reservable)
How current is this information about Old Tunnel State Park?
This listing was last updated on October 9, 2026. If something is out of date, let us know and we'll fix it.