January 23rd 1974
The event occurred on a cold night in the winter of 1974. There had been a terrible bang. The entire village heard it and thought something had exploded. Going outside, people saw blue and orange lights floating in a circle around Cader Bronwen, the mountain that rises to the east of the village.
As I wasn't there I cannot comment, however I've found a couple of pages regarding the incident, links below
For UFO crash details
A_Brief_History The_Telephone_Kiosk Views_of_Llandrillo Parish_Church UFO_Crash Y_Ganolfan 2000 Dudley_Arms Berwyn_Restaurant Coleg_LLandrillo_College Footbridge Tyddyn_Llan_Country_Hotel Llwyn_B&B Dolgadfa_B&B Best_Village Church_House Public_Toilets Flood Bowling_Green Royal_Visit Caravan_Parks Holiday_Cottage Old_Photo's