Topic summary
Berwyn Mountains

Extracted from the Wikipedia article Berwyn range.
Alleged UFO crash
At 8.38 pm on 23 January 1974, an earthquake of magnitude 3.5 was felt over a wide area of north Wales and as far as Liverpool. Since earthquakes are uncommon in the UK, it was not generally recognized for what it was, and since a number of unusual lights in the sky had been observed the same evening, it was considered possible that an aircraft had crashed, or a meteorite had impacted. Further confusion was caused by lights seen on the Berwyn Mountains, which subsequently turned out to have belonged to poachers.