Klerisso, Charles-Louis – Grotto of Tiberius on Capri Hermitage ~ part 06

The picture has something of this: cave, subway system, rock, grotto, stone, water, limestone, nature, exploration, stalactite, ancient, inside, geology, tunnel, wall, landscape.
Perhaps it’s a painting of a cave with a group of men standing in front of it and a man laying on the ground in the middle of the cave.