#1719: roman, diving, africa
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Verified with structural, building, place names, and epigraphic traces, this interactive map and attached full PDF report collect more than 2400 kilometers of Roman roads in Castilla-León (Spain)
[ES]
https://www.viasromanas.net/ -
OpenDiveSites is an open and collaborative California coast database of diving locations, including maps
https://opendivesites.org/Main_Page -
Digital Earth Africa is a website built on Open Source that provides access to 2.9PB of free and downloadable Earth Observation data covering the whole continent
https://maps.digitalearth.africa/
Raf