taken 18 years ago, 4 km NNE of Felindre, Swansea/Abertawe, Wales
Unstable ground on Mynydd Garn-Fach
A veritable Pandora's Box of ills, two sunken holes on the hill here are fenced off and marked with 3 separate signs warning "No entry" "No smoking" "Unstable ground" and "Gas" and apologising on behalf of the Coal Authority !
Yet there doesn't seem to have been any mining on this hill.
SN6506 : Unstable ground on Mynydd Garn-Fach It is quite surprising how nature often covers up evidence of human activity. Although Nigel didn't see evidence on the ground, the map indicates that there were three mines previously in the area.