Grindstone Butte is a summit in Haakon County, South Dakota, in the United States.
[1] With an elevation of 2,595 feet (791 m), Grindstone Butte is the 417th highest summit in the state of South Dakota.
[2] Grindstone Butte's name comes from the Native Americans of the area, who collected their grindstones from this summit.
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