Porcupine Mountains Wilderness State Park

The Porcupine Mountains Wilderness State Park — the “Porkies” — protects about 60,000 acres of the western Upper Peninsula, making it the largest state park in Michigan and one of the few true wilderness areas in the Midwest. It shelters one of the largest surviving tracts of old-growth northern hardwood forest in North America, a rugged spine of ancient hills, and miles of undeveloped Lake Superior shoreline.

Its signature view is the Lake of the Clouds, a long narrow lake cradled in a forested valley far below a clifftop escarpment overlook. Beyond it lie Summit Peak, the waterfalls of the Presque Isle and Big Carp rivers, more than 90 miles of trail, backcountry cabins and yurts, and in winter a small downhill ski area on Lake Superior's shore.

Established in 1945 to save its old-growth timber from the saw, the park is managed by the Michigan Department of Natural Resources near Ontonagon. It rewards visitors year-round — backpacking and waterfalls in the warm months, blazing color in fall, and skiing and snowshoeing in the deep-snow winter.

The Porkies are built for backpacking: more than 90 miles of trail thread the old-growth, including the rugged Lake Superior Trail along the shore and the escarpment trail above Lake of the Clouds, with backcountry campsites, rustic cabins and yurts scattered through the wilderness. Day hikers can reach the famous Lake of the Clouds overlook in a few steps from the parking area.

The Presque Isle and Big Carp rivers tumble over a series of waterfalls, the rivers and Lake Superior offer fishing, and Summit Peak's observation tower gives a roof-of-Michigan view. In winter the park runs a small downhill ski area and grooms Nordic trails, with snowshoeing throughout.

Summer and early fall are prime: warm hiking, running waterfalls, and in late September into early October a spectacular hardwood color show across the old-growth canopy — one of the best leaf-peeping destinations in the Midwest. Summer holds the biggest crowds at the Lake of the Clouds overlook.

Spring brings high water and mud; winter buries the park in lake-effect snow, opening the ski hill and Nordic trails but closing back roads. Come prepared for cold, remote conditions outside summer.

The Ojibwe knew these hills long before European arrival; the name “Porcupine Mountains” is said to echo a resemblance, seen from the lake, between the tree-covered ridgeline and a crouching porcupine. Copper drew miners to the region in the 1800s, and old mine sites still dot the park.

As industrial logging threatened the last great stands of old-growth hardwood in the 1940s, conservationists pushed the state to act. Michigan established the wilderness park in 1945, preserving the ancient forest that gives the Porkies their rare character today.

The Porcupine Mountains are among the oldest exposed rock in the region, built from billion-year-old volcanic basalt and sedimentary layers tied to the Midcontinent Rift that nearly split the continent and left the Lake Superior basin. Those hard, tilted rock layers form the escarpment that drops away below the Lake of the Clouds.

The same ancient bedrock holds the copper that drew miners, and glaciers of the last Ice Age scoured the valleys and shaped the Lake Superior shoreline seen today.

Quiet old-growth and a wild shoreline make the Porkies excellent for wildlife watching. Look for black bear and deer along forest edges at dawn and dusk, pine marten in the canopy, and beaver and otter along the rivers.

Bald eagles and ospreys hunt the Lake Superior shore and river mouths, migrating raptors pass along the coast in fall, and the dark, remote skies make for superb stargazing.

The park's heart is its old-growth: towering sugar maple, hemlock, yellow birch and basswood, some centuries old, forming a closed canopy rarely seen elsewhere in the Midwest. Streams, waterfalls and the Lake Superior shore add wetland and aquatic habitats.

Black bear, white-tailed deer, beaver, otter, pine marten and snowshoe hare live here, and the park lies within the range of moose and gray wolves. Bald eagles patrol the rivers and lakeshore, and the clear streams hold trout.

The Porcupine Mountains carry deep meaning for the Ojibwe people of the western Upper Peninsula, whose presence here spans millennia. The park also preserves the story of the copper-mining era that shaped the region and of the mid-century conservation fight that saved its old-growth forest.

The park lies along Lake Superior west of Ontonagon in the far western Upper Peninsula, reached via M-107 and South Boundary Road. The visitor center near Union Bay is the place to start for maps, cabin check-in and the Lake of the Clouds road; the overlook itself is a short walk from its parking area at the end of M-107.

Ironwood and the Wisconsin border are about an hour southwest; this is a long drive from anywhere, so plan fuel and supplies. A Michigan Recreation Passport is required on every vehicle.

The park exists to protect old-growth forest, so conservation is its core mission: staying on trails, respecting closed areas and packing out everything helps preserve a fragile, irreplaceable ecosystem. The DNR manages the wilderness backcountry to keep human impact light.

As part of the Lake Superior watershed, the park also shares in efforts to protect the world's largest freshwater lake and its tributaries from pollution and invasive species.

This is genuine wilderness: trails are rugged and remote, cell service is largely absent, and help can be hours away. Carry a map, water and layers, tell someone your route, and be ready for sudden Lake Superior weather even in summer.

River crossings can run high after rain, waterfalls and escarpment edges are slippery and steep, and winter brings deep snow and serious cold. Black bears are present — store food properly in the backcountry.

A Michigan Recreation Passport is required for vehicle entry. Backcountry cabins, yurts and campsites must be reserved, and dispersed camping is allowed only in designated zones. Pets must be leashed and are restricted in some areas.

Collecting plants, rocks or wood and disturbing wildlife are prohibited, fires are limited to designated sites, and fishing follows Michigan DNR seasons and licensing. Drones require authorization.

The town of Ontonagon to the east and Silver City at the park's edge offer lodging, food and fuel. Nearby, the Presque Isle River unit anchors the park's western waterfalls, and the broader Keweenaw copper country lies to the northeast.

Ironwood, the Black River Harbor waterfalls and the Wisconsin Northwoods are within reach to the southwest, making the Porkies a centerpiece of a wider western-U.P. trip.

Don't miss the Lake of the Clouds overlook — but go beyond it: the escarpment trail and the waterfalls of the Presque Isle River reward a little more effort. Visit in late September for peak color, and arrive early at the overlook on weekends.

Book backcountry cabins and yurts well in advance, bring bug protection in early summer, and plan for a long, remote drive with limited services near the park.