Twenty Thousand Leagues Under the Sea – Divers on the Ocean Floor, Riou 1870s

Dense crosshatched blacks surge against explosive white bursts as two armored diving-suited figures navigate a volcanic or geothermal underwater seabed, their bulbous helmets and weighted boots rendered in meticulous engraved line work. One figure stands tall with a pole or weapon, the other crouches low amid cascading jets of superheated water or gas. Rocky spires loom in the background, evoking the alien grandeur of the deep ocean floor from Jules Verne's classic novel.