This colliery is located on the edge of the village of Fforest in the Loughor valley near Pontarddulais. It was a late nineteenth-century mine which first appears on Ordnance Survey maps in 1899, on the second-edition plan, which indicates that coal was extracted through slant mining (inclined shafts). The colliery appears to have gone out of use in the mid-twentieth century. Its site is now overgrown with trees, though air photos show structural features in the pasture field immediately above the mine site.
Photographed during RCAHMW aerial reconnaissance in March 2014.

Additional source:
OS County Series 25-inch map: sheet Glamorgan VII.10, edition of 1899.

RCAHMW, 20 October 2017