Uele, Jean-Pierre-Laurent. Type the tomb in an underground grotto near the church of San Nicolas on the island of Lipari Hermitage ~ part 12

The picture has something of this: architecture, building, ancient, arch, wall, door, stone, house, entrance, antique, doorway, Gothic, column, castle.
Perhaps it’s a watercolor painting of a man and a woman standing in a tunnel with a rock in the foreground and another man standing on the other side of the tunnel.