#1300: mediterranean, atlas, relief
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The Mediterranean Sea Collection at the Atlas of Places provides a set of maps, including several bathymetric charts
https://www.atlasofplaces.com/research/mediterranean-sea-collection/ -
Fernão Vaz Dourado (1571) Atlas is available online at high-resolution thanks to the "Arquivo Nacional Torre do Tombo de Portugal"
[PT]
https://digitarq.arquivos.pt/details?id=4162624 -
"Enhancing Lowland Terrain in Shaded Relief" is the first episode of a tutorial series on how to enhance elevation models using photography techniques to reveal all the hidden details
http://www.churchillgeo.com/revealing-hidden-landscapes-mapping-where-plains-and-peaks-collide/
Raf