Devil's Kitchen is a small cave on the southwestern shore of Mackinac Island in Michigan, USA. The cave was carved during the Nipissing post-glacial period by the waves of Lake Huron. It consists of two hollows in a rocky cliff, one directly on top of the other. Mackinac Island's brecciated limestone has eroded into a variety of unusual formations. The cave's appearance is comparable to that of a human face with an open mouth.