To protect and conserve the resources and for the safety of our visitors, we only allow 250 people at the upper viewing area. If we reach that limit we close off the parking lot next to the upper viewing area and will admit more visitors to the upper viewing area as people leave. . . .

May 21, 2016 - The park. restrooms are closed due to flooding. 

Nature

Old Tunnel State Park is the smallest state park in Texas, consisting of only 16.1 acres of land. Despite its small size, there are a variety of recreational and wildlife-viewing opportunities. The abandoned railroad tunnel is home to up to 3 million Mexican free-tailed bats (Tadarida brasilienses mexicana) and 3,000 cave myotis (Myotis velifer) from May through October.


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