Winter Lectures - November and Decenber 2023


New location : Bangor Archaeology Society day school, tomorrow 11/03/2023



Finds Surgery, Saturday 1st April 2023


David Longley

We are saddened by the loss of our former Chief Archaeologist at the Trust, David Longley, who died peacefully earlier this week.

He worked for the Trust from 1983 until his retirement in 2011 and was Chief Archaeologist from 1992 until he retired. His dedication and learning set the tone for those working at the organisation and ensured that its reputation was enhanced over the years.

He directed and steered the Trust through some difficult times, which safeguarded its future survival and growth. Ill health following his retirement meant that he was unable to complete the work he had set himself, though fortunately the results of much of his research was made available through the many articles he published.

He will be remembered at the Trust for his friendship, for the help and support he gave staff, and for his high standards of work.


David Longley leading a group around Llys Rhosyr, 2014



Winter Lecture Series

We've organised an ‘in person' winter lecture series (Jan – Feb 2023, Wednesday evenings, 7:30pm, Thomas Telford Centre, Menai Bridge). See above for details. No booking required. Tea and coffee available afterwards.

We also hope to record each lecture with a view to publishing online after.

If you have any concerns about Covid, we would encourage you to wear a mask. You can also contact myself:

Please do not attend if you are exhibiting any Covid symptoms.

NB we're not sure if the Menai Suspension Bridge will be open when the lecture series commences.

Merry Christmas!


Dinas Dinlle Prehistoric Coastal Hillfort Excavations

July 11th – August 5th 2022

Image © Gwynedd Archaeological Trust

Gwynedd Archaeological Trust is once again conducting excavation work at Dinas Dinlle prehistoric coastal hillfort. This time we're focussing our attention on the remains of the well-preserved remains of the large Iron Age roundhouse, on the western side of the hillfort interior.

The project is funded by and in collaboration with Cadw, the National Trust and the CHERISH project. Volunteers, local school children and Bangor University students are helping us with our work.

The fort is falling into the sea, and the roundhouse remains we'll be investigating are situated on the side of the hillfort most at risk from erosion.

Dinas Dinlle coastal hillfortfort is set in a dramatic location overlooking the sea and north Llŷn coastal plain. The defences and interior buildings are thought to have been first constructed in the late prehistoric period, but occupation, confirmed by finds of pottery, continued into the Roman period. In the early 20th century the fort formed part of a golf course, whilst during the Second World War defences were constructed on the northern slopes to protect nearby RAF Llandwrog – now Caernarfon airport.

The fort is owned by the National Trust, protected as a Scheduled Monument and the hill of glacial sediments on which the site sits is a geological Site of Special Scientific Interest.

Press enquiries: 07741 292802


We'll be posting daily updates so you can follow the project - click here.


Dinas Dinlle Open Day 30th July 2022


Bryn Celli Ddu 2022

Don't forget – we'll be at the Bryn Celli Ddu Open Day this Saturday (18th June), 11:00am – 4:00pm.

Come and make a model burial chamber at our stand. Book sale too.

There are also some evening events.

See links, below:


Online Lectures

Enjoy some of our recent online public lectures.


Archaeological Excavations, Llwyn Bleddyn Road, Rachub

Gwynedd Archaeological Trust is carrying out an excavation on Llwyn Bleddyn Road, Rachub , in
advance of a development for social housing. The excavation is funded by Adra.

Site aerial photography

Overlapping roundhouses


Click here for further information



Have a look at our latest interactive 3D model!

This one is of the large roundhouse recently excavated as part of this year's excavations at Dinas
Dinlle prehistoric coastal hillfort.


Dinas Dinlle Open Day 4th September 2021



Public Lecture: William George Owen, Caernarfon (1810-85): Peiriannydd Sifil

Our recent Welsh language lecture from David Elis-Williams: 'William George Owen, Caernarfon (1810-85): Peiriannydd Sifil' is now up on our YouTube channel. The video description includes an English language summary.

New Publication: Jane Kenney: A Welsh Landscape Through Time: Excavations at Parc Cybi, Holy Island, Anglesey (2021)

Oxbow books are offering the hardback edition of Jane Kenney's new book ‘A Welsh Landscape Through Time: Excavations at Parc Cybi, Holy Island, Anglesey' (2021) at a special pre-publication introductory price. To take advantage of this offer before the book is officially published next month, click here.


Public Lecture: Approaches towards the coastal archaeology of northwest Wales: retrospective and prospect

Here's Gary Robinson's (Bangor University) recent lecture.

Reach out across 6,000 years and see how people lived on Holy Island

Parc Cybi Archaeological Exhibition, Oriel Môn

Oriel Môn opens to public again on Tuesday, 18th of May. This means you will finally be able to view Gwynedd Archaeological Trust's exhibition Parc Cybi, A Landscape Through Time.

How did the ancestors of people now living in Holyhead live in the past? This exhibition tells the story of how inhabitants of the island lived, worked – and were buried – thousands of years ago. Come and learn about the amazing archaeological landscape uncovered by excavations at Parc Cybi on Holy Island . 120 Ysgol Cybi pupils helped prepare for the exhibition, examples of their work will be on display. View artefacts unearthed during the dig and learn about some of the internationally important features found.

In 2006 to 2008 and 2009 to 2010 Gwynedd Archaeological Trust carried out archaeological excavations in advance of the building of Parc Cybi, a major Welsh Government development site near Holyhead. Over 20 hectares were investigated to reveal an enthralling archaeological landscape. The excavations, subsequent analysis and the exhibition have been funded by Welsh Government.

Features of International Importance and a chance to see finds up to 6,000 year old
Features uncovered include the internationally important remains of a 5,700 year old Neolithic timber house, whilst the most important artefact was a large bead made of cannel-coal (a type of oil shale that looks much like jet). Made by the occupants of the Neolithic house, this is the only known Neolithic jet-like bead from Wales , and will be on display as part of the exhibition.

You can view the exhibition at Oriel Môn, Llangefni, Anglesey (LL77 7TQ) from Tuesday 18th May 2021.


Click here to see our Parc Cybi web pages.


Welsh Language Lecture

Email if you would like to ‘attend'.


Friends of Gwynedd Archaeological Trust 2019 – 2020 Newsletter

Click here for a digital version of our recent Friends of Gwynedd Archaeological Trust 2019 - 2020 newsletter.

For more information on the Friends of Gwynedd Archaeological Trust click here.


Public Lecture: First Farmers of Wales - the Neolithic period in the north-west

Here's a recorded version of Jane Kenney's recent lecture.


Treforys Dig Diary February 2021

Click here



Dig Diary, Undisclosed Location, January 2021

Click here


Interactive 3D Models


We've created some interactive 3D models of various artefacts and structures. CLICK HERE



Pot Making Activity (Young Archaeologists' Club)

Make your own clay pot! (Young Archaeologists Club session).

There's an information sheet which accompanies this video. We've sent that to our branch members. Download it HERE.

Gwynedd Archaeological Trust runs the Bangor (Gwynedd) branch of the Young Archaeologists' Club. If you're interested in becoming a member, click HERE.

YAC website – click HERE.


Online Lectures - Roman Gwynedd

Dave Hopewell - one of our senior Archaeologists – presents a short series of informal lectures on recent work by the Trust.
Our first five lectures will look at Roman Gwynedd - click here.

Welsh subtitles – click here.



Browse thousands of historic sites across Wales from the comfort of your own home. Online public access to the Historic Environment Records (HERs) for each local authority area in Wales.

For User Guide: CLICK HERE

To access Archwilio: CLICK HERE

For further information on Archwilio and the HER: CLICK HERE


Anglesey Antiquarian Society Day School in association with Gwynedd Archaeological Trust

Click here to download poster


Community excavation at the former Ysgol Pendalar site near Segontium in Caernarfon

The community excavation at the former Ysgol Pendalar site near Segontium in Caernarfon has started! The excavation, funded by Cadw, is working with volunteers to uncover the history of this impressive Roman site.

Segontium Roman Fort is a unique and interesting site. The fort was established nearly two thousand years ago as a military base to control the land and coast conquered by the Romans. The Trust's excavation site is close to the Roman road leading from the fort gate. A limited excavation of this site was undertaken by Mortimer Wheeler in the 1920s and it was noted that the builders of houses along Constantine Road and Vaynol Road had discovered Roman archaeology. Wheeler recorded a road, wells, ovens, pits and traces of wooden buildings that are typical of a vicus. A vicus is a type of Roman civilian settlement commonly found alongside the roads leading from forts. This would have been a street of wooden buildings where craft and trade was carried out.


Public Open Day at Dinas Dinlle Coastal Fort

Click here to download poster.


Come and join us on an archaeological excavation at the iconic Dinas Dinlle Coastal Fort

Click here to download poster.

If you would like to take part in the excavation, contact 01248 366970

More on the CHERISH project:


Pen y Bryn Quarry Barracks, Dyffryn Nantlle
Public Open Day, Sunday 21/7/19

Click here to download poster


Come and Volunteer for Gwynedd Archaeological Trust
Pen y Bryn Quarry Barracks, Dyffryn Nantlle
July 2019

Download press release

If you would like to take part, contact 01248 366970


Archaeological Walks 2019-20

Download Walks Programme

Free, booking essential: contact 01248 366970


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Gwynedd Archaeological Trust is certified to ISO 9001:2015 and ISO 14001:2015

To view a copy of the ISO 9001:2015 certificate, please click here.
To view a copy of the ISO 14001:2015 certificate, please click here.