Old Tunnel State Park
Old Tunnel State Park protects a historic railroad tunnel and one of Texas's best-known bat colonies. Visitors come at dusk to watch millions of Mexican free-tailed bats and cave myotis emerge from the tunnel, with scenic Hill Country views and a small picnic area.
Free
Visiting with Dogs
Dogs allowed on leash; keep them under control and clean up after them. Check trail and cave restrictions.
Visitor Tips & Reviews
What Visitors Say
Visitors love the bat emergence at dusk, scenic hill country views, easy wildlife watching, and peaceful atmosphere. Many note small size, limited amenities, and best experience at sunset.
Tips from Visitors
- Bring a flashlight for the bat viewing area.
- Wear sturdy shoes on uneven trails and rocky paths.
- Arrive early for parking and better bat viewing spots.
- Check seasonal bat emergence times before your visit.
- Carry water, especially during hot Texas afternoons.
Best Time to Visit
The best time to visit Old Tunnel State Park is from May through October, when bat emergence viewing is most reliable and the evenings are warm. Arrive before sunset for the best viewing spots and cooler temperatures.
Amenities
Nearby Attractions
Explore these attractions near Old Tunnel State Park:
- Fredericksburg Wine CountryA large cluster of wineries, tasting rooms, and vineyard restaurants within a short drive of the park.10 miles away
- National Museum of the Pacific WarA major Fredericksburg museum complex with exhibits on World War II history and the Pacific Theater.10 miles away
- Enchanted Rock State Natural AreaA popular granite dome and hiking destination offering expansive Hill Country views.24 miles away
Things to Do at Old Tunnel State Park
Camping at Old Tunnel State Park
Old Tunnel State Park does not offer camping. Nearby camping is available at other Texas Hill Country state parks and private campgrounds.
Hiking Trails
Old Tunnel State Park offers a short but memorable day hike centered on the bat cave area and scenic hill country views. Trails are generally easy to moderate, with some rocky sections and a few steep spots. Visitors often enjoy the wildlife, wildflowers, and sunset bat emergence, though the park is small and can feel crowded during peak times.
Old Tunnel Bat Tunnel Trail
EasyShort interpretive trail leading to the historic railroad tunnel and bat viewing area; best for a quick walk and wildlife viewing.
Old Tunnel Loop Trail
EasyA scenic loop around the park with views of the surrounding Hill Country and access to the tunnel area.
Cedar Brake Trail
ModerateA more rugged trail through cedar and oak woodland with some uneven footing and mild climbs.
Hilltop Connector Trail
ModerateConnects key park features with longer stretches of hiking and broader views from higher ground.
Directions
From Fredericksburg, drive south on US-87, then turn onto Old San Antonio Road and follow signs to the park entrance. The park is about 10 miles south of town; arrive early for evening bat viewing.
Contact & Info
Frequently Asked Questions
What is Old Tunnel State Park best known for?
It’s best known for its huge evening bat emergence, when thousands of Mexican free-tailed bats fly out of the old railroad tunnel at sunset. Many visitors come specifically for this seasonal wildlife viewing.
When is the best time to see the bats?
The best viewing is usually at dusk, especially in warmer months when bats are active. Arrive early for parking and a good spot, since popular viewing times can get crowded.
Do I need a reservation to visit?
Reservations are often recommended or required for bat-viewing events and can help guarantee entry during busy times. Check current park rules before you go, since access and capacity can change by season.
Is the park good for hiking?
Yes, but it’s a small park with short trails rather than long hikes. Visitors often mention the scenic hill country views and the easy walk to the viewing area as highlights.
Are there restrooms and other facilities?
Basic visitor facilities are available, but this is a small park with limited amenities. Many reviewers suggest bringing water, snacks, and anything else you may need for a short visit.
Is Old Tunnel State Park family-friendly?
Yes, it’s a popular family outing, especially for kids who enjoy seeing the bats. Families often appreciate the short walk, educational experience, and memorable sunset viewing.
Don’t Forget the Essentials
Essential camping & hiking gear we recommend to make your park trip easier and more comfortable.
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