This monument preserves more than 87,500 acres along the East Branch of the Penobscot River in Maine, a traditional transportation corridor of the native Wabanaki people of the region, as well as a critical part of the area’s logging history, once used to float logs downstream to cities and towns. Vast forests surround the river with a diverse mix of tree species, including maple, oak, ash, beech, birch, aspen, spruce, fir and hemlock. The topography of the monument includes deep river valleys, dramatic flood plains and curious geologic features, including lava flows and “rock conglomerates” — formations made up of different types of Appalachian rock fragments dating back millions of years.

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