Scientific evidence indicated that the event was generated by an earthquake[1] combined with sightings of a bright meteor widely observed over Wales and northern England at the time.
[2][3] On the evening of 23 January 1974, residents of the Berwyn Mountains area in northern Wales reported a loud noise and a bright light in the sky.
[3] Scientific evidence indicates the event was generated by an earthquake[1] combined with sightings of a bright meteor widely observed over Wales and Northern England at the time.
[2] Declassified Ministry of Defence documents also suggest the incident was caused by the combined effects of an earthquake and a meteor.
A 2017 episode of Ancient Aliens speculated that a UFO crashed at Berwyn and its wreckage was likely taken to Rudloe Manor.