Dunbar Cave State Park is located 60 minutes northwest of Nashville and about one and a half miles northeast of downtown Clarksville in Montgomery County. Dunbar Cave is the most prominent of several caves located in this designated natural area. In the roomy mouth of the cave, square dances, radio shows, and big band era concerts were once held.
My personal favorite trail in Clarksville. While it is often times busy and the gates close at sundown, it is possibly the best trail to run on that's somewhat challenging around here. There are two loops both of which connect in the middle. They are not paved and not made for bikes. The short loop is easy and less than a mile long. The recovery loop is about a mile and a half and has much higher incline with no switch backs. The cave is not always open, but offers a cool area to rest after your run.