cross-section of landmass from the sky to the ground below. a underground dungeon map for an adventure titled "The Cave Crab Adventure", d&d, fantasy, isometric battle map, diagram, diagram of caves under a mountain, burrow, bunker under a house, nuclear fallout shelter, csu, cross-section, from the side, underground national geographic, best quality, masterpiece, award winning photo, fantasy landscape, extremely detailed, HDR,