What was ball mill?

J.R. Reissing | Feb 8, 2021 | Category: Nature preserve

Ball Mill Resurgence Natural Area - All questions

Address: Perryville, MO 63775, USA

J.R. Reissing | Feb 9, 2021

So no mill? Just a name

Jason Wilde | Feb 9, 2021

It's better explained on signs at the sight but basically it's a sinkhole, when flooded spouts water, which weathers rocks within the hole until they are smooth stone balls.

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