3.8 - SOLVA - PORTH CLAIS
Penpleidiau
Passed Penpleidiau Island to Ramsey Island.
The Island and coastal Headland are formed of "Dolerite" ( a volcanic rocks ).
Formed when Molten Magma was intruded into the older Sedimentary rocks .
Ref: 6374
Date: 12/02/2010
Location: SM 771 241
