Alabaster Historic District
The Alabaster Historic District is a 400-acre mining complex in Iosco County, Michigan, centered on an open pit gypsum mine. It is bounded by on the east by Lake Huron, on the north by Gypsum Road, on the south by Keystone Road, and on the west by Rempert Road, south of Tawas City, the county seat.
Source: Wikipedia — Alabaster Historic District (CC BY-SA 4.0)