Front:
ARCH ROCK, MACKINAC ISLAND, MICH.
3A-H1356
Back:
ARCH ROCK, Mackinac Island, Mich. World
famous limestone arch, above East Shore
Drive. The top of the arch is 154 feet above
the surface of Lake Huron; the height from the
base of buttress to the top of the rock is 50
feet. The arch was formed by action of reced-
ing waters in ancient geological times and
tells the visitor that the waters of these inland
lakes held dominion over the highest part of
this Island.
COPYRIGHT 1934 BY G. H. WICKMAN, MACKINAC ISLAND, MICH
