Unraveling The Mystery Of Carolina BaysGeology rarely gets a standing ovation, but Singletary Lake might just change that opinion forever. Singletary Lake is a Carolina Bay, one of the most geologically puzzling landforms on the entire Atlantic Coastal Plain. Singletary Lake ranks among the largest and deepest Carolina Bays in the region, reaching nearly 12 feet at its deepest point. Singletary Lake State Park, located at 6707 NC Highway 53 East, Kelly, NC 28448, offers paddling conditions that feel genuinely rare. Step Inside Historic Group Camps With Deep RootsHistory has a way of sneaking up on you at Singletary Lake.