the.com/valleys
Earth's modest dips, where rivers, fog, and good farmland conspire to settle down.
means Low areas of land between hills or mountains, usually carved by rivers or glaciers.
from From Latin vallis via Old French valee, the same root that gave us vale and the eternally dramatic vale of tears.
V vs URivers carve V-shapes, glaciers gouge U-shapes.
Population magnetMost ancient cities clustered in river valleys.
DeepestYarlung Tsangpo in Tibet plunges over 5 kilometers.