Extreme Testing

Historical marker location:

49965 Van Dyke Avenue, Shelby Charter Township, Michigan

( Marker can be reached from North Proving Grounds Boulevard.)

The Packard Endurance Runs.

The Upper Peninsula of Michigan is home to the only national park in the state, Isle Royale National Park. The park is a remote wilderness area consisting of a large island in Lake Superior and over 400 smaller islands, and is known for its scenic beauty, hiking trails, and diverse wildlife, including moose, wolves, and bald eagles.