GeoGraph - photograph every grid square

Overgrown tramways

This seems to have been some kind of processing area for the old Pwll Bach or Betting collieries. Only these crossing and looping tracks on a concrete surface remain. The tracks are on three different height levels.
The land has now been returned to farm use (as can be seen from the cattle feeders in the distance) and is slowly being covered with mulch and grass.
Directly along the line of the tracks in the photo, at the first hedge, is where I'm guessing the tunnel to Ystalyfera emerged but alas there is no sign of it now.