Explore Old Tunnel State Park in the Texas Hill Country

Old Tunnel State Park is a small but fascinating state park primarily known for its bat population and historical significance. After an evening of bat watching, the drive back to Fredericksburg is a tranquil experience under the Texas sky. Upon returning to Peach Tree Inn & Suites, you can unwind in your room or enjoy the outdoor seating areas in our neighborhood-like property. Our Fredericksburg, TX, hotel is one of the best places to stay in this unique region of the Texas Hill Country.

5 Reasons to Visit Old Tunnel State Park in Fredericksburg, TX

Scenic Beauty and Location: Nestled in the picturesque Texas Hill Country near Fredericksburg, TX, Old Tunnel State Park is the smallest state park in Texas at 16.1 acres. However, it more than makes up for its size with its charm and tranquility.

Historical Significance: The park is named after the old railroad tunnel that runs through it. The tunnel was constructed in 1913 as part of the San Antonio, Fredericksburg, and Northern Railway. Although the railway ceased operations in the 1940s, the tunnel remains a fascinating historical landmark. After people left the tunnel, it became inhabited by bats.

Wildlife Watching: Old Tunnel State Park is best known for its bat population, hosting up to 3 million Mexican free-tailed bats and 3,000 cave myotis bats from May through October. In August, female Mexican free-tailed bats return to the tunnel with their young, boosting the bat population to about three million. The evening bat flight is a stunning sight, with millions of bats streaming out of the tunnel to hunt insects overnight. As the weather gets colder, the bats migrate south, leaving the tunnel mostly empty until spring, when the cycle restarts. The park features two viewing areas for this event: an upper viewing deck and a lower viewing area, providing different perspectives of the bats’ flight.

Hiking and Nature Trails: Take a leisurely stroll along the nature trail, which is under half a mile. Keep an eye out for wildlife while marveling at the tunnel, and gain insights into bat lore and railroad history from informative signs.

Wildlife Research: Biologists have been conducting research at Old Tunnel State Park since The Texas Parks and Wildlife Department purchased the property in the 1990s. The results of these research projects have helped biologists make informed management decisions, and research work continues to this day.