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Minnehaha Falls

By Geology and Ecology of National Parks
Minnehaha Falls from the base of the falls. The top part of the rocks behind the waterfall is the Platteville Limestone formatio
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Detailed Description

Minnehaha Falls from the base of the falls. The top part of the rocks behind the waterfall is the Platteville Limestone formation, with the Decorah Shale underneath and St. Peter Sandstone at its base.  NPS

Sources/Usage

Public Domain.