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Old Tunnel State Park, Fredericksburg

4.5
#3 of 8 in Parks in Fredericksburg
State Park · Hidden Gem · Nature / Park
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Old Tunnel State Park is a railroad tunnel of the Fredericksburg and Northern Railway, which ceased operations in 1942. The property came under the care of Texas Parks and Wildlife Department, and was officially made a state park in 2012. It is located halfway between Fredericksburg and Comfort on Old San Antonio Road. Since the shut down of the railway, the tunnel has become a bat cave, hosting over 3 million Mexican free-tailed bats and 3000 Cave myotis bats. The bats emerge at sunset during the months of May through October, and viewing is open to the public.
At 16.1 acres, it is the smallest state park in Texas.
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Old Tunnel State Park reviews

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TripAdvisor traveler rating
TripAdvisor traveler rating 4.5
431 reviews
Google
4.6
TripAdvisor
  • Beautiful view of nature. The bats are intriguing! The park rangers are very knowledgeable about the bats & give a really good presentation. If you struggle to walk or climb, the upper level seating.....  more
    Beautiful view of nature. The bats are intriguing! The park rangers are very knowledgeable about the bats & give a really good presentation. If you struggle to walk or climb, the upper level seating.....  more »
  • I happened to be passing by and just had to stop and check it out. I went to the first observation area.. But spotted a closer area... Made my way down to that one. Heard a couple with two little... 
    I happened to be passing by and just had to stop and check it out. I went to the first observation area.. But spotted a closer area... Made my way down to that one. Heard a couple with two little...  more »
Google
  • One of our Boy Scouts did his Eagle Service Project at this park and he invited the troop out to celebrate and experience the bat emergence. It was an absolutely fascinating experience. His project was great, but the park program was amazing. Mr. Benny was our host who kept even our youngest family members mesmerized by his stories of the train, the railway, and the bats. He talked as we walked down the old train track bed through tall, overhanging, shady trees. There was a light breeze that made this July evening in Texas bearable. There is a rustic seating area to view the emergence and only there did I smell the ammonia from the guano that pervaded the area. We arrived at the seating area just as the bats began to emerge at 7:15pm. The bats swept out of the tunnel, spiraled in a tornado formation to gain lift, and swarmed through a break in the trees up into the cloud-studded sky. The emergence only lasted 5 minutes, but our host said they estimated 300,000 bats lived in the tunnel. After the spectacular emergence, Mr. Benny continued with a few more stories. The Scouts asked a wide range of questions from how far the bats traveled each night to how did they count the number of bats. The love for this State Park was evident in all the staff members. I would highly recommend this stop to anyone interested in bats, but make sure you check with the park, because it closes at 5:00pm and evening visitors need a special permit.
  • First time to actually walk a little bit of the trail. Saw the tunnel where the bats come out from. Learning about some of the Species who live there. Lots of different kind of Bird's. The view is Amazing.

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