Nature · Wales · summit section · both names searchable
Yr Wyddfa / Snowdon: terrain elevation and local relief
Yr Wyddfa / Snowdon uses an approximately 1,075-meter surface estimate in EGM2008 from Copernicus GLO-30. The bounded terrain section has about 1,017 meters of local relief above its lowest sampled point. Published summit surveys are separate references.
≈ 1,075 m
Data-derived estimate- Measurement
- Highest sampled surface in the documented Copernicus terrain section · EGM2008
- Subject or version
- Wales · summit section · both names searchable
- In feet, rounded
- 3,525.3 ft (1 ft = 0.3048 m)
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Terrain boundary, base and datum
- Vertical reference
- EGM2008. Published surveys are separate; no datum conversion is applied.
- Highest sampled surface
- 1074.5 m at 53.068611°, -4.076250°.
- Local base
- 57.1 m at 53.038056°, -4.047917°. Lowest sampled point within this bounded terrain section.
- Section bounds in WGS84-G1150
- West -4.157708°, east -3.993542°; south 53.037639°, north 53.100417°.
- View and scale
- Orthographic map section facing north. Equal horizontal and vertical map scales. Approximate grid spacing: 27.9 m east-west and 30.9 m north-south. Lower and surrounding terrain omitted.
produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved
A little more perspective
Eryri National Park Authority’s 2025 Yr Wyddfa plan gives the summit elevation as 1,085 meters above sea level. This bounded Copernicus section has a highest surface sample of about 1,075 meters in EGM2008. The illustration retains surrounding ridges and a defined sampled base; it is not a reconstruction of any one walking route or railway journey.
The local-relief view subtracts the lowest sampled point in this section: 57.1 meters at 53.038056° latitude, -4.047917° longitude. This produces about 1,017 meters of relief within the stated boundary. It is not a universal mountain base, a route’s total ascent, or topographic prominence.
The rendered surface uses the public 2021 Copernicus release, primarily based on TanDEM-X observations from 2011–2015 with infill from other sources. It is a surface model rather than a current bare-earth survey. Neutral shading explains the geometry without claiming a snow season or photographic ground texture. No datum conversion or summit correction is applied.
Quick facts
Yr Wyddfa / Snowdon uses an approximately 1,075-meter surface estimate in EGM2008 from Copernicus GLO-30. The bounded terrain section has about 1,017 meters of local relief above its lowest sampled point. Published summit surveys are separate references.
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Sources and measurement notes
- Eryri National Park Authority: Yr Wyddfa Plan 2025
- Copernicus DEM: dataset definition, datums and attribution
- Public Copernicus GLO-30 release documentation
- Wikidata: summit-area identity and initial coordinate
- Copernicus source terrain tile 1 (GeoTIFF)
- Copernicus source terrain tile 2 (GeoTIFF)
Yr Wyddfa and Snowdon identify the same mountain in search. Its approximately 1,075-meter modeled surface and the authority’s 1,085-meter published reference have separate provenance.
Source review recorded . Maintained by Ishan Karunaratne. Suggest a correction with a source and the exact measurement being compared.