Oak Leaves
Hartley Nature Center
Natural History. Stewardship. Sustainablility.

 

Scratches and smoothing  of bedrock remain from the movement of the last glaciers thousands of years ago. The glaciers use the stones they pluck off and pick up as the tools to do their sculpturing. The melting back of the glaciers left these granophyre rock surfaces for us to discover on the red rock outcrops in the north of the park. 

Hartley Nature Center, 3001 Woodland Ave. Duluth, MN 55803       location map
Phone: 218-724-6735    email:

Hours: Monday-Friday, 9-4, and Saturday, 10-5
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