Lake Vermilion-Soudan Underground Mine State Park
Breitung Township, MN
Nature
The Lake Vermilion-Soudan Underground Mine State Park is a Minnesota state park at the site of the Soudan Underground Mine, on the south shore of Lake Vermilion, in the Vermilion Range. The mine is known as Minnesota's oldest, deepest, and richest iron mine.
From Wikipedia, CC BY-SA 4.0
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