eruption of ashes and pumice of the volcanoes of the cantal at the beginning of the pliocene period, vintage engraving

albert ancient animal antique art artwork ash ashes basalt biology bury cantal color colored document drawing drill engraved engraving eruption etching extinct fossil gaudry growth hand illustration lava miocene mount old organism paleontology pattern picture pliocene purmice saporta science species vintage volcano volcanoes