Bryn Celli Ddu
Llanddaniel Fab, Anglesey
Bryn Celli Ddu, the mound in the dark grove, is a passage tomb built over an older stone circle. In 2005 it was confirmed that on the summer solstice, the rising sun shines straight down the passage and lights up the inner chamber.
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
- c. 3000 BC
- Where
- 53.2077, -4.2357
- Group
- Circles & monuments
Visiting
Cadw, free. A short farm-track walk from the lane.

The Ledger of Lost Britain
The Romans arrived in AD 43. For most people that is where the history of Britain begins. But by the time the legions landed, people had already been living on these islands for thousands of years. They had hunted, farmed, mined flint, dragged stones across the country, raised a hill by hand, and buried their dead in great tombs. They left no written words. What they left was the ground itself. Every place in this book can be visited, or has been dug up, or is in a museum.
Nearby mysteries
- The Marquess of Anglesey's ColumnTower or folly · Llanfairpwll, Anglesey · 2 miles away
- HMS ConwayShipwreck · Menai Strait, Anglesey · 3 miles away
- SegontiumRoman Britain · Caernarfon, Gwynedd · 5 miles away
- Caernarfon CastleCastle or abbey · Caernarfon, Gwynedd · 5 miles away
- Beaumaris GaolExecution site · Beaumaris, Anglesey · 7 miles away
- Beaumaris CastleCastle or abbey · Beaumaris, Anglesey · 7 miles away