Earth and Cold Blood take place in an underground city populated by Silurians, a humanoid reptilian race who have been hibernating for millions of years and want to have their planet back from the "ape descended primitives" who have evolved and taken over (i.e. humankind). The Silurians and their aquatic cousins the Sea Devils also appeared in the original run of Doctor Who - in Doctor Who and the Silurians (1970), The Sea Devils (1972) and Warriors of the Deep (1984). The Justice League Unlimited, featured the location Skartaris. The animated television series Billy Dilley's Super-Duper Subterranean Summer takes place in an underground world called Subterranea-Tania, which the main characters get trapped due to a science project gone awry. Games The video game Final Fantasy IV for the Super Nintendo Entertainment System (Released as "Final Fantasy II" in the United States) features a subterranean world that is inhabited by dwarves. The video game Terranigma for the Super Nintendo Entertainment System features both a hollow and normal Earth. A pulp roleplaying game, Hollow Earth Expedition. The Dungeons & Dragons role-playing game's Mystara campaign setting included a Hollow World expansion, featured in the Hollow World Campaign Set. The tabletop Pathfinder Roleplaying Game'''s main setting, Golarion, features an extensive underworld known as the Darklands. The deepest region of the Darklands, known as Orv, consists of a series of caverns (referred to as Vaults) roughly the size of surface nations, home to a variety of alien environments, creatures and cultures. In Mage: The Ascension, the Hollow Earth exists as an alternate reality, but virtually all ways of accessing without magic have ceased to exist in the modern age because people no longer believe the Earth could be hollow. In Aion: Tower of Eternity, the world of Atreia used to be a hollow planet with the Tower inside it, connecting the northern and southern hemispheres together, providing light and heat to the creatures living inside of the planet. The video games Dragon Age: Origins and The Elder Scrolls V: Skyrim both feature a subterranean city, along with other caves. Arx Fatalis takes place almost entirely in an underground setting. Avernum, and its predecessor, Exile, are set in a nation based in a cavern system originally used as a penal colony. The role-playing game Breath of Fire: Dragon Quarter for the PlayStation 2 console is set entirely in an underground world, where the main characters try