United States, Ohio, Erie, Margaretta Twp., Castalia Quarrry Reserve. Castalia Quad. 152 acres of Erie County Park quarried land. 110 acres are S of OH 101 just W of Castalia; the rest is N of OH 101 & S of the railroad.
41.391273 -82.829228 +-1341m. WGS84
A large volume of limestone was removed leaving a low flat pavement & a higher level area, both with ponds