This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Casselman Fm I. Outcrop of Pennsylvanian Casselman Formation Mile Marker Pennsylvania Turnpike Interstate Taken July en Common Good CommonsHelper Jstuby en Jstuby en Cczero Original upload log page en CasselmanFmI Jstuby bytes no of Pennsylvanian Casselman Formation Mile Marker Pennsylvania Turnpike Interstate Taken