Porcupine Mountains Wilderness State Park (60,000 acres) is one of the few remaining large wilderness areas in the Midwest. Towering virgin timber, secluded lakes, and miles of wild rivers and streams make a visit to the 'Porkies' a trip to remember. Black bears are common in the Porkies. Porcupine Mountains Wilderness State Park is 15 miles west of Ontonagon in Michigan's Upper Peninsula. The park's 60,000 acres are one of the few remaining large wilderness areas in the Midwest. Towering virgin timber, secluded lakes, and miles of wild rivers and streams make a visit to the 'Porkies' a trip to remember. As Michigan's largest state park, planning your trip may require the use of various maps. The Porcupine Mountains Wilderness State Park was established in 1945 by Michigan's Legislature. Since then, many changes have taken place in the way we live; however, the Porcupine Mountains are almost unchanged. The remote interior with its towering pine and hemlock seems to defy time. The solitude of the park is mysterious and exciting. As Michigan's only state designated wilderness, the Porkies is partnered with Leave No Trace ethics and has developed manuals for specific uses.