Fredericksburg offers unforgettable experiences, and one of the most unique happens just after sunset at Old Tunnel State Park. From May through October, millions of Mexican free-tailed bats spiral into the sky in a breathtaking natural spectacle. If you’re planning your trip and browsing hotels in Fredericksburg, Texas, make sure to add this one-of-a-kind event to your itinerary. After a night of nature and adventure, you’ll want a relaxing retreat, so book your stay in the upscale lodging at the Inn on Barons Creek, a delightful spa and hotel in downtown Fredericksburg, TX!
History of Old Tunnel State Park in Fredericksburg, TX
Old Tunnel was carved into the hillside in 1913 as part of the Fredericksburg and Northern Railway. After the railroad ceased operations in the 1940s, the tunnel fell quiet. Over time, it became the perfect summer refuge for bats migrating through the region. Today, the tunnel shelters up to three million Mexican free-tailed bats along with a smaller colony of cave myotis bats. Old Tunnel State Park is the smallest state park in Texas, but it is an important habitat for these magnificent creatures!
Catch a Glimpse of Millions of Bats Emerging From Old Tunnel
Each evening around sunset, visitors gather to watch the colony emerge at Old Tunnel State Park in Fredericksburg, TX. From May to October, visitors gather to witness millions of bats spiraling upward in a counter-clockwise direction as they leave the tunnel to feed.
The spectacle is not without drama, as red-tailed hawks and other predators take advantage of the swirling cloud of bats, while raccoons feed on those that fall. Once in the air, these remarkable creatures may soar as high as 10,000 feet and travel up to 60 miles in search of insects, consuming agricultural pests such as corn earworm, cutworm, and webworm moths. In fact, the Old Tunnel colony alone can devour more than 25 tons of moths in a single night.
To make the most of this natural wonder at Old Tunnel State Park, rangers offer nightly programs that share the fascinating life history of the bats before they emerge. Advance tickets are required for all visitors, with two viewing areas available. The upper area offers stunning views of the Texas Hill Country and the chance to spot hawks hunting. The lower area is where the sound and rush of millions of wings provide a breathtaking close-up encounter.