Geraint Edwards and Elgar Hughes of the Ceirog Valley, Denbighshire, recall seeing a UFO in the sky over north east Wales in 1974.
A 1974 "UFO incident" which was dubbed the Welsh Roswell was dismissed as an earthquake and a meteor combining, offical files show.
There was a huge bang and a brilliant light over the Berwyn Mountains in north east Wales, and there were later claims a spaceship crash was concealed.
Comparisons were drawn with Roswell, New Mexico, USA, in 1947, where it is claimed an alien crash was concealed.
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