Set aside by the State as a Natural Area in 1983, the 77-acre Pinnacles Youth Park in Boone County, Missouri hosts an interesting and unique geological formation. Bordered on one side by Kelley Creek and on another by Silver Fork Creek, the two streams have been slowly carving away at the mass of Burlington limestone separating them. What remains is the fascinating formation present today, a ridge of peaks running for over 300 meters, and soaring nearly 30 meters above the streams.
It is a natural playground for those without fear of heights, and the perfect sort of hike, combining a little walking, climbing, and balancing. Parts of the trail are a bit too narrow for a good run along the rocks, but it is definitely possible along most of the path. Don’t let a fear of heights keep you from enjoying this spot though. There is plenty of trail that will not get your acrophobia worked up.
The one mile trail starts at a break in the trees on East Pinnacles Road, where a sign informs visitors that they are following the “Cat Tail Trail to Attack Hill” and ascends quickly to the first of several awesome views of the valley below. Indeed, massive flat limestone exposures provide the perfect spot to sit back in the shade and enjoy the breeze drifting through the trees.
Continuing along the trail, it narrows through and along the edge of the peaks, rising only a bit more. In places, it was one foot in front of the other, while keeping a hand on the limestone wall. It would be easy to slip and find oneself sliding down the hill, but it is not too dangerous, if one pays attention. A few tunnel-like openings dot the vertical rock face, providing fun little spots to hide out from above too.
Descent is gradual and leads back to Silver Fork and the “Old Dam Crossin” there, or one can follow the creek 100 m or so to another interesting geological feature. Similar to that in Graham Cave State Park, the 12 m tall and 40 m long formation known as Shelving Rock is the result of the creek undercutting the limestone and beginning a new phase for the Pinnacles.
Geology is not the only thing unique about this park. It is a private park created from a Land Trust, and open to the public since 1965. Care and maintenance of the park are afforded primarily through donations of time and money from visitors, those on the board, local citizens, youth and other community groups.
There is much more to explore on the other 70+ acres, as well. The creeks are a good spot to catch up on fishing for small-mouth bass or do a little paddling. Shallow caves dot the area along with forested land that is not too dense or off the beaten path to make your own trail or find your way back.
