Greenstone Ridge Trail
Italy
The Greenstone Ridge Trail is a 40-mile-long (64 km) hiking trail on Isle Royale, in Lake Superior, northern Michigan. The island is within Isle Royale National Park. There are no roads on the island, a wilderness area and national park, so the trail doubles as the primary means of land transportati
on across the island.
Listen to the audio guide for Greenstone Ridge Trail Free on WIP — starts by itself when you arrive, even with the screen off