Water gives the map its structure
A contour is an equal-height line, not a river boundary. Read ridges together with channel direction before interpreting a catchment edge. Depressions, culverts and embankments can make a purely topographic divide misleading.
Two coordinate systems, two jobs
EPSG:3035 is the archive working reference for European area comparisons. EPSG:3857 is a web display reference; its changing scale makes it unsuitable for direct canopy-area totals. Reproject the geometry before measuring.
Tile service specification
The documented tile convention uses XYZ addressing, a north-origin row index and a 256-pixel raster face. The schema page describes the address contract; this static edition contains no live tile endpoint or downloadable regional coverage.
Open cartography, explicit provenance
Small diagrams and specimen tables on these pages may be reused with attribution. Regional source data retain their own terms. Always preserve acquisition dates, vertical references and processing notes when combining open datasets.