Home LiDAR map Powys St. Harmon
LiDAR map of St. Harmon
Waystone shows the bare-earth LiDAR of St. Harmon (Saint Harmon), a community in Powys, at one metre per pixel. The heritage records hold 151 recorded places here: 123 Coflein records, 14 scheduled monuments, 9 places recorded in Wikidata, 5 listed buildings. On the LiDAR, most of the ground in the community lies between about 276 m and 446 m above sea level; its highest point is about 505 m. By their register titles, its scheduled monuments include 8 barrows or cairns, 2 Roman sites, 1 henge or standing stone and 1 enclosure or other earthwork.
St. Harmon 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 St. Harmon, 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 St. Harmon. 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 St. Harmon 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 151 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
- Powys, Wales
- Area
- 73.5 km²
- Recorded places
- 151
- Height (LiDAR)
- Mostly 276–446 m above sea level; highest 505 m
- ONS code
- W04000342
Scheduled monuments and other designated sites
- Cwm y Saeson Standing StoneScheduled monument
- Round Barrows 400m NNW of Beili HwlynScheduled monument
- Crugyn TumulusScheduled monument
- Standing Stone & Round Barrow SE of HenriwScheduled monument
- Creggin Round BarrowScheduled monument
- Cnych Round BarrowScheduled monument
- Bronze Age round barrow NW of Glan-martegScheduled monument
- Pont Marteg, cairn circle to E ofScheduled monument
- Cefn Bychan Mound (Pillow Mound)Scheduled monument
- Bronze Age tumulus north of Beili HaulwenScheduled monument
- Roman Marching Camp (revealed by aerial photography) 500m SSE of Glan-yr-AfonScheduled monument
- Beili-Bedw EarthworksScheduled monument
- St Harmon Roman roadScheduled monument
- Cwm Sidywal settlementsScheduled monument
Listed buildings
Other recorded places
- Garreg Lwyd, Hut CircleCoflein record
- St Harmon's MillCoflein record
- Pont Marteg, Standing StoneCoflein record
- Pont Marteg, MoundsCoflein record
- St Harmon Methodist ChapelCoflein record
- Garreg Lwyd, QuarryCoflein record
- Gwastad, CairnCoflein record
- Gwastad, Stone AlignmentCoflein record
- Garreg Lwyd, CistCoflein record
- Marcheini Fawr, Burnt MoundCoflein record
- Drysgol, Hut CircleCoflein record
- Bwlchgwyn, MoundCoflein record
- Possible Roman Fort, BrynhirCoflein record
- Cefn Llech EnclosureWikidata place
- Garreg Lwyd, EnclosureCoflein record
- Dolhelfa-Isaf, Lead Mining AditCoflein record
- Cwm Nant, Marching Camp; St Harmon, Marching CampCoflein record
- Cefn-Faes Pillow MoundCoflein record
- Pont Marteg, LonghutCoflein record
- Pont Marteg, Long HutCoflein record
Nearest places with their own page
- Rhayader Castle6.4 km south
- Cwmhir Abbey9.2 km east
- Tinboeth Castle12.1 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.
- Coflein, Royal Commission on the Ancient and Historical Monuments of Wales, Open Government Licence.
Last updated 2026-10-16.