Home LiDAR map Neath Port Talbot Onllwyn
LiDAR map of Onllwyn
Waystone shows the bare-earth LiDAR of Onllwyn, a community in Neath Port Talbot, at one metre per pixel. The heritage records hold 34 recorded places here: 29 Coflein records, 3 scheduled monuments, 2 places recorded in Wikidata. On the LiDAR, most of the ground in the community lies between about 216 m and 321 m above sea level; its highest point is about 464 m. By their register titles, its scheduled monuments include 1 Roman site and 1 industrial site.
Onllwyn 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 Onllwyn, 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 Onllwyn. 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 Onllwyn 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 34 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
- Neath Port Talbot, Wales
- Area
- 10.8 km²
- Recorded places
- 34
- Height (LiDAR)
- Mostly 216–321 m above sea level; highest 464 m
- ONS code
- W04001026
Scheduled monuments and other designated sites
- Coelbren FortScheduled monument
- Roman Marching Camp South East of Coelbren FortScheduled monument
- Remains of Blast Furnaces at BanwenScheduled monument
Other recorded places
- Onllwyn CollieryCoflein record
- St David's Church, Dyffryn CellwenCoflein record
- Onllwyn Colliery Shaft 2, BftCoflein record
- Dyffryn Cellwen VillageCoflein record
- Onllwyn Colliery Shaft, Bft 3.Coflein record
- Onllwyn Independent Chapel, on llwynCoflein record
- Onllwyn Colliery, Coal Level 5Coflein record
- Onllwyn Colliery Drift, Bft 3.Coflein record
- Onllwyn Colliery Level 7, BftCoflein record
- Onllwyn Colliery Level 8, BftCoflein record
- Siloh Calvinistic Methodist Chapel, on llwynCoflein record
- Calfaria Baptist Chapel, Main Road, DyffrynCoflein record
- Global Centre of Rail ExcellenceWikidata place
- Blaendulais Grange, on llwynCoflein record
- Bryn Seion Independent Chapel, on llwynCoflein record
- Noddfa Wesleyan Methodist Chapel, Main RoadCoflein record
- Onllwyn Independent Chapel, on llwyn, DulaisCoflein record
- Banwen Disposal PointCoflein record
- Onllwyn Ironworks, Calcining KilnCoflein record
- Onllwyn Ironworks, on llwynCoflein record
Nearest places with their own page
- Foel Chwern6.9 km south-east
- Maen Madoc8.7 km north-east
- Maen Llia11.7 km north-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.
- Coflein, Royal Commission on the Ancient and Historical Monuments of Wales, Open Government Licence.
Last updated 2026-10-16.