Dinorwig Power Station: In pictures

Dinorwig Power Station: In pictures

1 of 8 Dam at Marchlyn Mawr - Dinorwig's upper reservoir

2 of 8 Dinorwig is one of the largest power stations of its kind in Europe

3 of 8 The mountain was excavated to create a massive cavern

4 of 8 Water pipes and tunnels are lined with concrete

5 of 8 Excavation work started in the 1970s

6 of 8 The power station is built inside the mountain between Peris and Marchlyn reservoirs

7 of 8 Water is pumped back up to Marchlyn lake for re-use

8 of 8 Dinorwig lies in the heart of Snowdonia