THE UK's Atlantis is entirely underwater with a church, school and post office that can only been during hot weather.
The village of Capel Celyn in the Trweryn Valley in North Wales was flooded in 1965 to make way for a new reservoir.
A post office, school and chapel were all submerged along with 800 acres of land.
Some have dubbed it the UK's Atlantis, a mythical underwater city.
During the summer months the remnants of the lost village can sometimes be glimpsed by tourists visiting Derwent Waterside Park.
The Llyn Celyn reservoir project was forced through to provide Merseyside with drinking water.
At one point locals planted a bomb and then disrupted the official opening, singing an anti-English song.
Llanwyddyn was flooded in 1888 to provide Liverpool with water, but by the 1950s the council was under pressure to find a new source.
This led the council to sponsor a bill in Parliament, which led to the creation of the new reservoir.
The Daily Post recently reported how construction work has begun in the area 60 years after the famous flood.
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The Post reported that Dŵr Cymru Welsh Water has started builing a second spillway at Frongoch, near Bala, Gwynedd.
The channel is needed to take surplus water underground down to Afon Tryweryn.
Andrew Bowen, the company’s head of dam safety, said precautions are being taken. “As Llyn Celyn lies within Snowdonia (Eryri)
National Park, the visual impact of the new spillway has been a priority for us,” he said when the project was green-lighted.
“It’s been carefully designed to blend in with its natural surroundings and work with the land adjacent to the dam.
"As part of this work, we are also keen to carry out improvements for those who visit the dam. New picnic tables, bike racks and information boards explaining the history of the reservoir were included as part of the planning application.”