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Michigan Nature Association photo
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The 1 mile long trail Esrey Park Nature Sanctuary trail begins on the south side of M-26 across from Keweenaw County's Esrey Park and 50 yards to the right and leads south across Brockway Mountain Drive to the Upson Lake Nature Sanctuary. It is one way to Brockway and is intermediate to difficult with some hills. This trail crosses some of the Keweenaw's best geological examples.The Upson Lake Nature Sanctuary is an example of a northern dry-mesic pine forest. Trees characteristic of this forest type include white pine, red pine, aspen and birch. As you explore, look for signs of beaver as well as the forest transition into sugar maple and yellow birch.The trail is in a Michigan Nature Association Sanctuary. Foot traffic only is allowed in Michigan Nature Association sanctuaries. Please, no pets, no mechanized vehicles, no fires, no camping & carry out everything you carry in.
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