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Bryn Celli Ddu is a megalith in United Kingdom, Europe. Cadw dates it to c. 3000 BCE.
A passage tomb aligned so the summer solstice sunrise lights its chamber.



Guide answers and timeline insights related to this Wonder.
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Compare the published evidence and its interpretations. “Consensus” records the mainstream account; “Alternative” identifies a competing interpretation, not an equally established conclusion. Estimates and unresolved questions remain qualified in the claim text.
| Field | Consensus | Alternative |
|---|---|---|
| Date | 3100 BCE - 2900 BCE c. 3000 BCE Cadw | No claims found. |
| Purpose | Passage tomb Cadw | No claims found. |
| Method | No claims found. | No claims found. |
Summer solstice sunrise lights the chamber
Calculating elapsed time...
Approximate - counted from January 1, 3,000 BCE (UTC). Based on the midpoint of 3,100 BCE - 2,900 BCE; the underlying date is uncertain.
| Unit | Completed total |
|---|---|
| Centuries | — |
| Decades | — |
| Years | — |
| Days | — |
| Hours | — |
Each row is an independent total of the same span, not a breakdown to add together.