Polygonal Rock Face

Erosion has caused polygonal rock faces to form in the sandstone and shale along the southern slope of Chandler Mountain at Horse Pens 40 in St. Clair County.

A sandstone and shale rock outcrop with weathered surfaces
Photograph by Mike Neilson

Appears In

Cumberland Plateau Physiographic Section

Cumberland Plateau Physiographic Section

A sandstone and shale rock outcrop with weathered surfaces

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