Trefrane Cliff Colliery chimney 3

Nolton Haven to Newgale
The small Nolton-Newgale coalfield is separated by faulting from the main Pembrokeshire coalfield. It lies mostly within Pennant Sandstone Formation of the Upper Coal Measures rocks.

Heading north along the coast path from Rickets Head, the site of Trefrane Cliff Colliery comes into view, with its spoil heaps and prominent furnace chimney. The colliery worked the Cliff Vein coal seam, pieces of which can be readily found in the spoil heaps.