Clemuel Ricketts Mansion
The mansion and lake are on a part of the Allegheny Plateau known as North Mountain. The plateau was formed about 300 to 250 million years ago in the Alleghenian orogeny. Rocks—gray sandstone with conglomerates and some siltstone—of the Mississippian Pocono Formation underlie the house and lake for more than 340 million years old. The lake is in a shallow valley,  deep, which is seized by glacial till up to  thick at the southeast end, where Kitchen Creek exits.