UFO case
Berwyn Mountain
Llandderfel, Gwynedd
On the night of 23 January 1974, villagers heard a huge explosion and felt the ground shake. Glowing lights were seen high on the Berwyn range.
Read the full story, see it on the map, get directions and find what else is nearby in the free Hidden Britain Atlas map.
- When
- 23 January 1974
- Where
- 52.8800, -3.3800
- Group
- UFO cases
Visiting
Open hill country. Walk from Llandrillo; check the weather first.

From the book
UFO Cases of Britain
Dubbed, with typically dry British humour, "the Roswelsh Incident" by tabloid newspapers, the Berwyn Mountains case has everything a good UFO story needs: a loud bang in the night, terrified villagers, persistent rumours of a government cover-up, and a thoroughly mundane official explanation that large parts of the public have simply never quite accepted.
Fifty-four real and closely examined British UFO cases, weighed with honesty rather than hype. From Rendlesham Forest, the best-documented UFO case the United Kingdom has ever produced, to the Berwyn Mountains, the Broad Haven schoolchildren, the Calvine photograph and the Bonnybridge hotspot, each case sets out what was seen, who saw it and what the explanations are.
Nearby mysteries
- The Dragon of LlanrhaeadrDragon or monster · Llanrhaeadr-ym-Mochnant, Powys · 5 miles away
- The Vanishing of Owain GlyndŵrUnexplained · Glyndyfrdwy, Denbighshire · 7 miles away
- LlanwddynLost village · Lake Vyrnwy, Powys · 8 miles away
- Teggie of Llyn TegidDragon or monster · Bala Lake, Gwynedd · 10 miles away
- Castell Dinas BrânCastle or abbey · Llangollen, Denbighshire · 11 miles away
- Capel CelynLost village · Llyn Celyn, Gwynedd · 14 miles away