A nature preserve whose highlight is a stunning rock formation and waterfall in a cave. It was used by Native Americans as a hideout in the 17th century, and then for weddings in the 19th century. Dover Stone Church's highlight is a metamorphic rock cavern in the shape of a church’s cathedral window with a cascading waterfall through the cave’s interior. The Stone Church Brook, a tributary of the Ten Mile River, flows through and out the cavern entrance.
The entrance is located off Route 22 below the traffic light in Dover Plains. Parking is available nearby at Dover Elementary School (when school is NOT is session) and at Freshco 22 Plaza 3156 NY-22 Dover Plains (when school is IN Session).