Global elevation dataset combining Copernicus GLO-30 (land) and GEBCO 2025 (ocean bathymetry) in Terrarium PNG tile format, ready for MapLibre GL, CesiumJS, and other renderers.

What is this?

A complete global elevation tile pyramid (zoom 0–8) encoded as Terrarium PNG images. Each pixel encodes an elevation value that can be decoded client-side — no server-side processing needed. Data sources:

Land elevation: Copernicus… See the full description on the dataset page: https://huggingface.co/datasets/aliasfox/openzenith-dem.