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:
Mudcracks roundtop hill MD. Mudcracks at Roundtop Hill near Hancock Maryland Silurian probably Wills Creek Formation Own br from org en Jstuby at org en en Jstuby Original upload log page en MudcracksroundtophillMD Jstuby bytes no at Roundtop Hill near Hancock Maryland Sedimentary rocks Mudcracks Silurian Geology