A is a comprehensive, three-dimensional representation of the Earth's bare surface, excluding all natural and man-made objects such as trees, buildings, and infrastructure. Often confused with Digital Surface Models (DSM) or Digital Elevation Models (DEM), the DTM is uniquely valuable because it reveals the actual "bare earth" topography. Primary Sources for World DTM Downloads
High-quality global DTM data is accessible through several reputable platforms, ranging from free open-source archives to premium satellite-derived datasets. Digital Elevation/Terrain Model (DEM) - NASA Earthdata world dtm download