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A Digital Terrain Model (DTM) provides a 3D image of the land surface through a grid of regularly spaced points of known height. This 50-meter resolution DTM is published by the Ordnance Survey of Northern Ireland (OSNI) as open data. The dataset is large and may take significant time to download.
Users must abide by the LPS Open Government Data Licence. The Esri REST API endpoint will not open directly in a web browser but can be used in desktop and web mapping applications.