Stock Photo - A boulder of greenstone metabasalt in Cunningham Falls Park, Maryland adjacent to Catoctin Mountain Park--a trademark of the Catoctin Formation, and less than a mile from the U S presidential retreat, Camp David

Stock Photo: A boulder of greenstone metabasalt in Cunningham Falls Park, Maryland adjacent to Catoctin Mountain Park--a trademark of the Catoctin Formation.

Searchable keywords

Choose multiple keywords