Trawsfynydd nuclear power station is a former Magnox power station situated in Snowdonia National Park in Gwynedd, Wales. The plant, which became operational in 1965, was the only nuclear power station in the UK to be not built on the coast (cooling water was taken from the man-made reservoir, Llyn Trawsfynydd). It was closed in 1991. Work to completely decommission the site is expected to take almost 100 years.
We walked directly passed the power station, its still humming away now.