Grogwinion Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
These heaps lie alongside the course of the river beside the footbridge. It has the impression that a bank of rock waste was created on the river bank and the sand dumped behind it to prevent it spilling into the river. The rock waste contains abundant galena and sphalerite samples.
Beyond the heaps of processed sand the spoil heap of Gwaithgoch Mine rises up the hillside and from this view point it is possible to see the break in the slope where the adit is, the bare rock above that and then the upper spoil heap.
The spoil heaps run down the hillside from the prominent gunnis that runs along the hillside potentially indicating the strike of the lode. The heaps contain only scant mineral samples.
Looking back down the gunnis. The exposed rock just beyond the track marks the spot where some of the buildings stood. Following the track on up the hillside to the most distant bend and just over the rise is the top adit of Gwaithgoch Mine
This gunnis is between 1.5m and 2m wide and runs along the valley side for about 500m potentially indicating the strike of the lode. It is however blocked along the length by fallen material so it is impossible to gauge the depth it may once have reached.