Lake Huron, the third largest of the Great Lakes, is contained within a basin underlain by ~400 million year old (0.4 bya) limestone, dolomite, and gypsum bedrock — rock that was formed from the ...

LAKEPORT STATE PARK — Michiganders visiting this picturesque place on the shore of Lake Huron have an ... become known as the park’s "rock garden." At the beach's sandy entrance, the garden ...