Hole in the Mountain Prairie
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Hole in the Mountain Prairie is located on Buffalo Ridge near the town of Lake Benton in Lincoln County, southwestern Minnesota. It spans a valley of about a half-mile in width, with a total area of 1,364 acres (5.5 km2).
Whitetail deer, foxes, and numerous rodents are present, but The Nature Conservancy touts the butterflies of Hole in the Mountain as the most unusual and significant of its creatures.
The preserve is located in a valley of Buffalo Ridge, which is in turn a portion of the Coteau des Prairies, a highland which originates in South Dakota and runs about 200 miles (320 km) south and southeast through part of Minnesota and into northwestern Iowa.