The Whistling Arch Trail at Red River Gorge in Pine Ridge, Kentucky is an easy 0.6 mile out-and-back trail that leads out to Whistling Arch and back.
Whistling Arch is small - maybe 10 feet wide by 4 feet tall, but it lies within a massive cliff overhang. The trail has a few different view points, but some of them are extremely dangerous to get to.
Viewpoints: There's a viewpoint behind the large cliff formation with views of the surrounding hillsides. The furthest viewpoint (and the better of the viewpoints) lies at the edge of a cliff on the opposite side of the cliff. To get there, the trail leads along a 60+ foot cliff with no fence or handrails. The trail is skinny and to the side of the trail is a hill - there's also a stump of a tree you need to get around that lies in the middle of the trail - next to this 60+ foot cliff. Hike these viewpoints at your own risk.
Dogs are allowed on this trail. There's also a campsite on the trail with a fire pit.