For nearly 80 years, this quarry provided limestone for the Fountain Rock kilns and stone crusher. From about 1872 to 1955, stone quarried here was used to fertilize fields and surface roads throughout Frederick County and the surrounding area. Workers removed rock from the quarry with hand tools, steam-powered jack hammers, and dynamite, which was housed in a small red building on the far side. The rock was loaded into carts mounted on tracks, and a cable powered by a steam winch pulled the carts to the top of the lime kilns. Pumps ran round-the-clock to keep the quarry from filling with water. Today the quarry is filled with water about 25 feet deep.