Volcanic Plugs of Ottawa Forest

The Ottawa National Forest includes almost one million acres of lakes, rivers, waterfalls, and forested hills of the Western Upper Peninsula. Stretching from the Peshekee Highlands north of Champion to the Michigan-Wisconsin border, the forest contains the Sturgeon River Gorge, McCormick Tract, and Sylvania Wilderness Area. Among its treasures are some unique geologic features to Michigan - three volcanic plugs.

Google image of three Volcanic Plugs

Google image of the three Volcanic Plugs

A volcanic plug is the remains of an ancient volcano. Once a volcano becomes dormant and succumbs to the powers of erosion, ...

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