TreeAlive
‹ Cof Cymru: National Historic Assets of Wales, Wales

Cof Cymru: National Historic Assets of Wales · Wales

Y Werthyr Hillfort

Tref Alaw, Isle of Anglesey, Wales

The record

Designation
Scheduled monument
Site type
Hillfort
Period
Prehistoric
Date of designation
14 April 2010
Community
Tref Alaw
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates (centre of the scheduled area)
53.33043, -4.45930
SAM number
AN158
Cadw record number
1397

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1883 "Watershed map England, Wales 3." (David Rumsey Map Collection, Stanford Libraries).

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Monument.

The monument comprises the remains of a small hillfort, which probably dates to the Iron Age period (c. 800 BC - AD 74, the Roman conquest of Wales). Hillforts are usually located on hilltops and surrounded by a single or multiple earthworks of massive proportions. Hillforts must have formed symbols of power within the landscape, while their function may have had as much to do with ostentation and display as defence.

The hillfort is located on a low rounded hill and the earthwork banks and ditches surrounding the summit of the hill are most well-preserved on the S and E sides, with a maximum height of 0.5m. Geophysical survey results indicate that there may be up to eight circular house platforms preserved within the interior of the hillfort, on the eastern side. An entrance is evident on the NE side of the site. The hillfort measures 186m (SW-NE) by 165m (W-E).

The monument is of national importance for its potential to enhance our knowledge of later prehistoric defensive organisation and settlement. The site forms an important element within the wider later prehistoric context and within the surrounding landscape. The site is well preserved and retains considerable archaeological potential. There is a strong probability of the presence of evidence relating to chronology, layout, building techniques and functional detail.

The scheduled area comprises the remains described and an area around, within which related evidence may be expected to survive. It is roughly circular in shape on plan and measures 186m (SW-NE) by 165m (W-E) and is located at SH36320/84305.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
See your own family's places on a living map