Mynydd Preseli - Pembrokeshire
Maiden Castle / Poll Carn nearby .
Volcanic Carns / Precambrian Rhyolites ( light coloured rock - extrusion of
an acid magma - fine grain ) / 600 million years old / above Treffgarne Gorge .
Mynydd Preseli Peaks in the distance.
Ref: 6162-3
Date: 03/01/2010
Location: SM 952.247