#3276: elevation, geogame, projections, prisons, stamps, geomob

Wed, 21 Oct 2026, last check: Wed, 21 Oct 2026. Post history

elevation World elevation map with data from Mapterhorn, which gradually adapts the colors to the viewed area and zoom level, by Bert Spaan (also the author of Allmaps)
https://relief.bertspaan.nl/world?lang=en#3.29/39.85/-2.45
geogame FactMap is another daily geogame, this time about historical facts that you have to match to the map, where points are awarded based on how close you are to the correct answer.
https://www.factmap.world/
projections An old-school, open-source projection demonstrator: a point of light, a sphere, and a plane, made with Python, three.js, proj4js, d3-geo
https://github.com/hypertidy/playproj
prisons "Detention Landscapes" aims to create an open-access database that collects evidence of violations within immigrant detention centers in all countries.
https://detentionlandscapes.uwazi.io
stamps User stage7 has collected all the stamps from the subway and train stations in Tokyo, known as eki stamps, along with a small line map, available for download as a 160 MB PDF.
https://stage7.net/dls/
geomob Remember that this Wednesday there's Geomob and beers in downtown Barcelona....
https://thegeomob.com/post/oct-21st-2026-geomobbcn-details

Raf