Black Rocks
Ancient basalt ledges at the north end of Presque Isle Park, where locals leap into the clear waters of Lake Superior in summer.
Black Rocks sits at the north end of Presque Isle Park. Its black basalt formed about 1.7 billion years ago, making it one of the oldest rock formations in North America. In summer it is Marquette's signature cliff-jumping spot, where young people leap from rocks several meters high into the clear, crystal waters of Lake Superior. Even at the height of summer the water is only about 15°C, and depth and currents vary a lot, so know your limits and never swim alone. It is a short walk from parking on the north side of the park's loop road.
Opening hours
About 07:00-23:00 (follows park hours)
Nearby sights
- Presque Isle Park
- Marquette Harbor Lighthouse & Maritime Museum
- Downtown Marquette & Lakeshore Trail
- Lower Harbor Ore Dock
- St. Peter Cathedral
- Sugarloaf Mountain
- Little Presque Isle
- Marquette Mountain