&sq=&lang=&file=File:Question_book-new.svg){kind=small} | This article needs additional citations for verification. (June 2020) |
| Sugar Loaf | |
|---|---|
&sq=&lang=&file=File:Mackinacsugarloaf.jpg) View from Point Lookout | |
| Highest point | |
| Elevation | 75 ft (23 m) |
| Coordinates | 45°51′50″N 84°37′03″W / 45.86389°N 84.61750°W |
| Geography | |
&sq=&lang=&file=File:Relief_map_of_USA_Michigan.png)  Location within the state of Michigan | |
| Location | Mackinac Island Michigan, United States |
Sugar Loaf | |
| Part of | Mackinac Island (ID66000397[1]) |
| Designated NHLDCP | October 15, 1966 |
Sugar Loaf is a 75-foot-high (23m) landlocked rock or stack in the interior of Mackinac Island in Lake Huron. Created by erosion during the period of postglacial Lake Algonquin, Sugar Loaf is the largest post-glacial erosion feature in the Straits of Mackinac.
The immense rock, which consists of resistant limestone breccia, was cut off from Ancient Mackinac Island or the Turtle's Back by the glacial meltwaters of Lake Algonquin. Polar storms released by the retreating ice sheet created erosional forces much stronger than any existing today on the Great Lakes.
The rock lies within the boundaries of the Mackinac Island State Park near the junction of Crooked Tree Road and Sugar Loaf Road. It can be seen from Point Lookout, near the Island's highest point.
- ^ "NPS Focus". National Register of Historic Places. National Park Service. Retrieved August 2, 2010.