Home LiDAR map Isle of Anglesey Trearddur
LiDAR map of Trearddur
Waystone shows the bare-earth LiDAR of Trearddur, a community in Isle of Anglesey, at one metre per pixel. The heritage records hold 58 recorded places here: 36 Coflein records, 9 scheduled monuments, 7 places recorded in Wikidata, 3 listed buildings, 1 Atlas of Hillforts entry. On the LiDAR, most of the ground in the community lies between about 5 m and 93 m above sea level; its highest point is about 219 m. By their register titles, its scheduled monuments include 3 settlements, 1 henge or standing stone and 1 barrow or cairn.
Trearddur on the LiDAR. Bare-earth LiDAR, drawn in your browser by the RVT toolbox (the Relief Visualization Toolbox, ZRC SAZU). It opens on Combined VAT; the panel holds all seventeen of its methods, each with its settings. LiDAR: Natural Resources Wales and Welsh Government, 1 m DTM, Open Government Licence. More about this map
The Ordnance Survey six-inch map of Trearddur, 1888–1913. The Ordnance Survey’s six-inch-to-the-mile map, second edition, surveyed between 1888 and 1913 and held by the National Library of Scotland, laid over today’s map with the paper colour removed, so the field boundaries, place names and antiquities the surveyors drew sit on the ground. More about this map
Roman roads near Trearddur. The Roman road network compiled by the Roman Roads Research Association (Digital Britannia), with each road’s grade of evidence, and the Roman forts, camps and towns along them. More about this map
See Trearddur with everything Waystone has
The full map lays the LiDAR under the Ordnance Survey's six-inch maps of 1843–1913, the Roman road network and the 58 recorded places in the community, with search, the sun dial, the ground probe and the cross-section tool, for all of England and Wales. Free, with nothing to install.
- County
- Isle of Anglesey, Wales
- Area
- 16.2 km²
- Recorded places
- 58
- Height (LiDAR)
- Mostly 5–93 m above sea level; highest 219 m
- ONS code
- W04000874
Places with their own page
Scheduled monuments and other designated sites
- Dinas Porth RuffyddScheduled monument
- Penrhosfeilw Standing StonesScheduled monument
- Caer-y-Twr, Mynydd TwrAtlas of Hillforts entry
- Holyhead Mountain Prehistoric VillageScheduled monument
- Caer y TŵrScheduled monument
- Tre-Arddur Hut GroupScheduled monument
- Gogarth Bay round cairnScheduled monument
- Porth Dafarch Hut CirclesScheduled monument
- Plas Meilw Hut CirclesScheduled monument
- Enclosed Hut Circle Settlement at Capel LlochwyddScheduled monument
- Caer y TwrAncient place (Pleiades)
Listed buildings
Other recorded places
- Handley Page Halifax II Bb275Coflein record
- De Havilland Sea Vampire FB9 WP993Coflein record
- Porth Ruffydd Lifeboat StationCoflein record
- Possible Ancient Standing Stone near Stanley MillCoflein record
- Flagstaff, South StackCoflein record
- Twmwlws Gorsedd Gwlwm; Gorsedd Gwlwm TumulusCoflein record
- Possible Burial ChamberCoflein record
- Holyhead Telegraph Station, HolyheadCoflein record
- Copper Mine CreekCoflein record
- Liverpool and Holyhead TelegraphCoflein record
- Powder House, Breakwater Quarries, HolyheadCoflein record
- Penrhosfeilw ChapelCoflein record
Nearest places with their own page
- Holyhead Mountain Prehistoric Village2.3 km north-west
- St Gwenfaen's Well5.9 km south-east
- Presaddfed Chambered Tomb11.7 km east
Neighbouring parishes
Reading the LiDAR
The terrain model has trees, crops and buildings removed, so banks, ditches, mounds, old field systems and hollow ways show as relief. Many are modern or natural: check the records and the old Ordnance Survey map in the app. How to read a LiDAR map. Scheduled monuments are protected by law; use public rights of way.
Sources
- LiDAR: Natural Resources Wales and Welsh Government, 1 m DTM, Open Government Licence.
- Heights: Waystone, from the same LiDAR sampled about every 12 m inside the boundary; 'most of the ground' is the middle 80% of those heights; metres above Ordnance Datum Newlyn.
- Parish boundary: Office for National Statistics, Parishes and Non Civil Parished Areas (December 2024), Open Government Licence. Contains OS data © Crown copyright and database right 2025.
- Recorded places: the national heritage records (Historic England, Cadw, Coflein and others) as held by Waystone.
- Ancient places: Pleiades (ISAW/AWMC), CC BY 3.0.
- Hillforts: Atlas of Hillforts of Britain and Ireland (Lock and Ralston 2017), CC BY-SA 4.0.
- Coflein, Royal Commission on the Ancient and Historical Monuments of Wales, Open Government Licence.
- Wrecks: UK Hydrographic Office via EMODnet Human Activities, CC BY 4.0.
Last updated 2026-10-16.