simple world map in equirectangular projection, longitude 30 W to 30 W, latitude 80 N to 60 S,
with five layers based on elevation ("bedrock" dataset, i.e. Greenland shown as if ice-free):

1. shallow water, -130m to 0m: -130m was selected because this was the coastline during the LGM (see early Holocene sea level rise, see File:Post-Glacial Sea Level.png)
2. lowlands, 0m to 250m
3. hills, 250m to 1000m
4. mountains, 1000m to 2500m
5. high mountains, above 2500m
self-made, using ETOPO1 data, GMT and inkscape
User:Dbachmann