Nelson Ledges Quarry Park (NLQP) was an operational rock quarry for nearly 20 years until the late 1950s when mining operations accidentally tapped into an underground freshwater spring. Much like a dinghy with a hole, NLQP quickly filled with water, making it impossible for the miners to continue their work. Operations were shuttered, and local phreaks of all sorts became the only visitors to the 250-acre hidden lake near Garrettsville, Ohio.