Large and small cup marks part of several found on the top of a rock outcrop near to the Bryn Celli Ddu Passage Grave and adjacent standing stone. Photographed during an Archaeology Safari on the island of Anglesey 25th June 2004. The Passage Grave, standing stone in the next field and the previously unrecorded cup marks on the rock outcrop, possibly form a triangulation and were perhaps significant in a much wider ritual landscape.