How to get glTF terrain for a real-world site

Real-world terrain as GLB — the binary glTF that imports everywhere with its textures aboard.

glTF is the most portable way to move a textured terrain mesh between tools, and the form you want is GLB — the binary container that carries the geometry, the draped imagery, and the materials in a single file. Mantle Place ships every bundle’s terrain as GLB, with the surrounding buildings as a second GLB layer, so one download covers Blender, Three.js and Babylon on the web, Unity through a glTF package, and Unreal Engine. The do-it-yourself version is a pipeline: source a DEM, mesh it at a sensible triangle budget, orthorectify and drape the imagery, then export with the textures embedded. One note: the bundle ships GLB rather than a loose .gltf-plus-textures folder, because the loose form is the identical scene and was dropped as a duplicate.