Copper Island, Peninsula section in Keweenaw County, Michigan, United States

Copper Island is the northern section of the Keweenaw Peninsula, separated from the mainland by Portage Lake and the Keweenaw Waterway. The area sits surrounded by water, created when a ship canal was cut through the peninsula's base.

In the 1860s, a ship canal was dug across the peninsula's base, connecting Portage Lake to Lake Superior. This construction project separated the peninsula from the mainland permanently and created the modern island configuration.

Finnish immigrants shaped the region and called it Kuparisaari, establishing churches, schools, and community halls whose influence remains visible in local traditions and buildings today.

The Portage Lake Lift Bridge connects the island to the Upper Peninsula, while US Route 41 provides main road access through the area. Getting around is straightforward, and the island is easily explored by car.

The island is encircled by the Keweenaw Water Trail, which allows kayakers and canoeists to paddle around the entire perimeter. This route offers a different perspective on the landscape and reveals the area's rugged shoreline in detail.