Walk to Llynau Gamallt.....4.

Rusted water pipe.

  

Large mine entrance.

  

Two further entrances or possibly for ventilation.

 

Walk to the ridge above Cwmorthin. 9

Looking down on the old slate works.

Hidden waterfall.

Remains of the pipe that carried the water to power the machinery below.

Narrow walkway to the dam. I bypassed this as it's in a poor state in places.