Berwyn Mountains incident (the 'Welsh Roswell')
- When
- Where
- Llandrillo, Wales
- Sources
- 2 public sources

A loud bang and bright lights over the Berwyn Mountains in north Wales led to a fruitless search and later claims of a covered-up crash. Seismologists recorded a magnitude 3.5 earthquake near Bala that night, and MoD files released in 2010 attribute the event to the quake plus a bright meteor.