Alien spaceships under the sea might sound like the stuff of fiction, but a UFO researcher claims that an incident off the shores of Anglesey could be the best evidence yet of an infamous North Wales close encounter.

However, UFO expert Russ Kellett said that a coastguard document backed his theory that one of three alien craft found off the coast of Anglesey crashed into Lake Bala and caused the Berwyn Mountain incident January 23 1974.

He said: “This information that I have unleashed is a sort of Holy Grail. The Ministry of Defence released documents a year ago and there was nothing about military activity.”

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