Castell Carreg Cennen, Welsh for Castle on the Rock above the River Cennen in the village of Trap near Llandeilo in Carmarthenshire, Wales. A freshwater spring rises in the cave deep below the castle, which would have been a useful supplement during dry weather.
Unfortunately, there doesn’t seem to be a consensus on the date of the first castle on this site. Certainly, there was something built here in the 12th century but it is highly likely that there were structures built of wood that predate this. There is evidence of Roman and prehistoric occupation. There is also speculation of an iron age hill fort on this site.