One of the neat features about the park is the trailway system near the park that follows the old Ft. Worth and Denver railroad line from South Plains, through Quitaque, and on to Estelline, the latter a well-known speed trap on US 287. It includes the 742-foot long Clarity Tunnel, the last active railroad tunnel in Texas when the FW&D abandoned the line in 1989.
https://www.myplainview.com/news/article/Clarity-Tunnel-remains-favorite-destination-8426584.phpPretty much the same spot as my opening photo.
Built in 1928, it's now the home of a huge summer colony of Brazilian free tail bats.
The easiest access to the tunnel is south of Quitaque, via FM 1065 then west on FM 689 to Monk's Crossing. From Monk's Crossing, the closest place to park, the tunnel is 4.5 miles south on the rails-to-trails, and there's no other road access, so a 9 mile round trip. A challenging walk, an easy bike. Lots of the trail has large railroad roadbed gravel to hike on, but the 4.5 between Clarity and Monk's is a much smaller gravel, very smooth, almost like a cinder race track. There's a slight descent, then a climb to the tunnel, but it's all easy grades, as railroads had to have very gentle slopes.
To me, the first 3 miles out from Monk's is not that interesting, then it starts to get prettier and more dramatic the next 1.5 to the tunnel. The really spectacular stuff is from the tunnel on west.
On the way to the tunnel, note the fine cinders on the trail.
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Past Clarity
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The west end of Clarity
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Some old fat guy on the trail
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Drifter 77, on Flickr