Stage's Pond State Nature Preserve  Stage's Pond State Nature Preserve is a 178-acre nature preserve with ponds in Walnut Township, Pickaway County, Ohio. The State Nature Preserve is located at 4792 Hagerty Road, north of the county seat of Circleville. The preserve was dedicated on August 23, 1974. The large pond is an example of a kettle lake, one created by a melted piece of ice broken off from a glacier. The ponds and surrounding habitat are a resting point for large numbers of migratory birds.