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Visitor Notice

Bryn Celli Ddu: Summer Solstice 2021

Summer solstice celebrations at Bryn Celli Ddu passage tomb on Anglesey will not take place this year due to the ongoing Covid-19 pandemic, and the small nature of the site. It is with a heavy heart that we cannot promote the gathering of people at this small, rural site, which has several long narrow paths and of course the narrow passageway inside the chamber, where social distancing would be impossible to maintain.

Please do not travel to Bryn Celli Ddu between the 18 and 22 of June, as the site will be closed.

This monument is open and free to visit with no pre-booking required.

Check our opening times and facilities below; please act responsibly and be respectful of the local area during your visit.

Please adhere to Welsh Government social distancing guidelines and coronavirus restrictions at all times and do not attempt to access enclosed spaces.


Iconic Neolithic tomb with a celestial secret

One of Anglesey’s most famous prehistoric landmarks, Bryn Celli Ddu (the ‘Mound in the Dark Grove’ in English) is actually two sites in one. In the early Neolithic (New Stone Age) period, a henge (bank and ditch) enclosing a circle of stones was built here, to be replaced later by a chambered tomb beneath a mound measuring up to 85ft/26m in diameter. Inside, a long, narrow passage leads to an octagonal chamber 8ft/2.4m across, where artefacts such as human bones, arrowheads and carved stones have been found.

But Bryn Celli Ddu’s most unusual feature can only be seen once a year. As the sun rises on the summer solstice (the longest day of the year) shafts of light shine directly down the tomb’s passageway to illuminate the chamber within.

More about Bryn Celli Ddu

Opening times

Daily 10am–4pm 

Last admission 30 minutes before closing

Closed 24, 25, 26 December and 1 January



Bikes access icon Car park icon No smoking icon No drones icon


N of A4080, 1m (1.6km) ESE of Llanddaniel Fab. Llanfair PG 2m (3.2km).

Postcode LL61 6EQ

For further information, please contact: Traveline Cymru on 0800 464 0000 or National Rail Enquiries on 03457 48 49 50.