#32668 Gustave Dore (1832-1883)

The picture has something of this: people, group, tree, man, cave, rock, subway system, mountain, monochrome, engraving, woman, wood, river, mystery, landscape, black and white.
Perhaps it’s a black and white drawing of a group of people in a cave with a man on a raft in the middle of the cave, surrounded by other people.