Rousseau, Philip. A scene from the fable by La Fontaine Rat-hermit Hermitage ~ part 11

The picture has something of this: people, skull, subway system, indoors, mammal, war, cave, museum, room, bird, group, battle, flame.
Perhaps it’s a painting of a skull sitting on a table with a cloth draped over it’s head and a bag on top of the table next to it.