Porcupine Mountain Ski Area Address: 36606 Carp Lake Tower Rd, Ontonagon, MI 49953 Phone: (906) 885-5209 Skiing Centers & Resorts Other Businesses: Lake Superior Credit Union at 801 River St, Ontonagon, MI 49953 Mountain View Lodges & Gallery at 34042 107 Engineers Memorial Hwy., Ontonagon, MI 49953