50 oder 100 m per elevation line might make sense.
Btw, where did you find this map? I really like the approach!
CC: @randomwizard@vivaldi.net @FrankBlack78@social.tchncs.de
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@lkh @mhd @FrankBlack78 I copied the lines from topagraphic maps available at
https://ngmdb.usgs.gov/topoview/viewer/#4/39.98/-100.06
Although, I did not copy the all the lines, just the major ones. And I did not copy them exactly.
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@randomwizard @lkh @mhd @FrankBlack78 I wonder if there's a way to configure Open Street Map (e.g. via OsmAnd) such that it produces a map without streets, without buildings, etc.
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@kensanata @randomwizard @lkh @FrankBlack78 I'm not sure how much OSM etc. pre-render into their tiles and/or how easy it is to render your own without that.
I do know that some people are using the (quite complex, IMHO) GIS tools like QGIS for mapping, e.g. this one https://idraluna-archives.bearblog.dev/a-tutorial-for-making-hexcrawl-maps-in-qgis/
(They also made a few real-world maps including a high-res version of Antarctica: https://idraluna-archives.itch.io )