Villagers in Llandrillo reported a massive tremor equivalent to a 3.5 magnitude earthquake accompanied by intense anomalous lights over the Berwyn Mountain range. British military cordoned off the area, prompting decades of claims of a crashed craft and recovered bodies - dubbed the 'Roswelsh Incident.' Official records attribute the event to a simultaneous earthquake and meteor impact, but no impact crater was ever found. UK MoD incident reports are held in the National Archives.