LiDAR map of Glascwm
Waystone shows the bare-earth LiDAR of Glascwm (Glasgwm), a community in Powys, at one metre per pixel. The heritage records hold 239 recorded places here: 192 Coflein records, 34 scheduled monuments, 6 listed buildings, 6 places recorded in Wikidata, 1 ancient place (Pleiades). On the LiDAR, most of the ground in the community lies between about 225 m and 443 m above sea level; its highest point is about 542 m. By their register titles, its scheduled monuments include 13 barrows or cairns, 8 henges and standing stones, 3 castles and 2 hillforts.
Glascwm 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 Glascwm, 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 Glascwm. 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 Glascwm 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 239 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
- 70.3 km²
- Recorded places
- 239
- Height (LiDAR)
- Mostly 225–443 m above sea level; highest 542 m
- ONS code
- W04000277
Places with their own page
Scheduled monuments and other designated sites
- The Fedw Stone Circle 360m W of Llanboidy WoodScheduled monument
- Graig CampScheduled monument
- Cwm Berwyn CampScheduled monument
- Wern CampScheduled monument
- The Gaer hillfortScheduled monument
- Castle Bank HillfortScheduled monument
- Cefn Wylfre Stone Circle and Round BarrowScheduled monument
- Six Stones Stone CircleScheduled monument
- Gelli Hill Stone CircleScheduled monument
- Cwm standing stoneScheduled monument
- Court standing stoneScheduled monument
- Cwm-Maerdy Standing StoneScheduled monument
- Upper House round cairnsScheduled monument
- Gilwern Hill round cairnScheduled monument
- Gilwern Hill, round cairn on NE ofScheduled monument
- Cwm-berwyn round cairnScheduled monument
- Carneddau, round cairn on N end ofScheduled monument
- Carneddau, cairn on N end ofScheduled monument
- Giant's Grave round cairnScheduled monument
- Gwernfach round cairnScheduled monument
- Court stone rowScheduled monument
- Cilberllan ring cairnScheduled monument
- Hundred House round barrowScheduled monument
- Castle Bank ring cairnScheduled monument
- Gelli Hill Round BarrowScheduled monument
- The Mount Mound & Bailey Castle, Hundred HouseScheduled monument
- Fforest Wood Mound & Bailey CastleScheduled monument
- Penarth Mount Castle MoundScheduled monument
- Bryntwppa stone rowScheduled monument
- Pant y Rhiw Medieval SettlementScheduled monument
- Cwm-Twrch Medieval SettlementScheduled monument
- Gellidywyll Platform SettlementScheduled monument
- Nant Brook EnclosureScheduled monument
- Garnfawr Deserted Rural SettlementScheduled monument
- ColwynAncient place (Pleiades)
Listed buildings
- Church of St David
- Church of St David
- The Old Mill
- Telephone Call-box at road junction in centre
- Cregrina Free Mission with gates and railings
- Road bridge E of Crossway
Other recorded places
- Colwyn Castle, Roman FortCoflein record
- Colwyn Castle, GlascwmCoflein record
- General Aircraft Hotspur II HH253Coflein record
- Standing Stone, Hundred HouseCoflein record
- Little Hill, Mound VCoflein record
- Blaen Bedw, Mound IICoflein record
- Little Hill, Round BarrowCoflein record
- Cwm Twrch, Mound ICoflein record
- Cwm Twrch, Mound IICoflein record
- Gelli Hill, StoneCoflein record
- Cwm Blaen Erw, BarrowCoflein record
- Glascwm Mill Cottages, BarrowCoflein record
- Hundred House Common, Barrow ICoflein record
- Penarth Mount, BarrowCoflein record
- Bryntwppa Stone RowCoflein record
- Ddole Defended EnclosureCoflein record
- Vron, MoundCoflein record
- Gwernfach, Cairn IIICoflein record
- Gwernfach, Cairn IVCoflein record
- Perthi Common, Cairn IICoflein record
Nearest places with their own page
- Colwyn Castle1.1 km south-west
- Crug Eryr Castle6.2 km north-east
- Cefnllys Castle6.9 km north
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.
- Coflein, Royal Commission on the Ancient and Historical Monuments of Wales, Open Government Licence.
Last updated 2026-10-16.