Good Harbor Reef 3D Bathymetric Model for Sleeping Bear National Lakeshore on Tuesday 23 June, 2026 Although Summit is known for its thermoformed 3D maps, we can also create 3D-printed topographic and bathymetric models. The park rangers at Sleeping Bear National Lakeshore came to Summit and requested a color 3D printed model of the Good Harbor Reef — a spawning and nursery habitat for Great Lakes native fish. Being under the lake surface, the reef's rocky structure and prominent shape was difficult for visitors to visualize. This 20" wide x 2.25" deep precision bathymetric multicolor model accurately shows the reef in Good Harbor Bay. The model is used as a briefing and interpretation tool for park visitors, allowing them to understand a key story of the lakeshore hidden from view.