Warlord of Mars #20

Joe Jusko Cover

John, Carthoris and Linea head to the bottom of the Sea of Omean to find a secret chamber that houses a machine which threatens to destroy all of Barsoom. They shut off the machine but Linea is mortally wounded by a great worm that guards it. As her final act, she commands the Black Pirates to make peace with the red people of the surface world.