This is an image of the drive and viewing point at West Bluff on Brockway Mountain Drive in the Upper Peninsula of Michigan.
The caption states:
THE WEST BLUFF OF BROCKWAY MOUNTAIN DRIVE
In The Copper Country of Michigan’s Upper Peninsula
IN this distance can be seen Lake Superior, Lake Fanny Hooe, and Keweenaw Park Cottages.
–This postcard is dated 1955