both underwater and on dry land. They may be responsible for the appearance of the first life-forms on Earth, including the entity known as Ubbo-Sathla (although sources differ in this regard). They created the shoggoths to be their all-purpose slave race. Eventually, however, the shoggoths rebelled—an event that hastened the decline and ultimate collapse of their civilization. Although the Elder Things managed to initially subdue the shoggoths after their attempted rebellion, the shoggoths continued to improve physiologically, increasing in intelligence and developing the capacity to live on land. The Elder Things are known to have warred against the star-spawn of Cthulhu, the Great Race of Yith, and the Mi-go. Despite these conflicts, it was the gradual cooling of the planet during the last ice age that spelled their doom. Retreating to their undersea cities deep in the ocean, they would thereafter have no further dealings with the outer world. Their last surface city, located on a high plateau in the Antarctic, remains frozen in ice. The ruins of this city were discovered in 1931 by two members of an Antarctic expedition from Miskatonic University. The last known and most significant undersea city is located directly beneath the Elder Things' ultimate surface city in the Antarctic, and was apparently overrun by the shoggoths. Four of the eight Elder Things (still alive after millions of years) unearthed by other members of the Miskatonic expedition were described in the story At the Mountains of Madness as being survivors from an early age of the species' civilization. They were killed by a shoggoth while attempting to find a means to enter the subterranean ocean in the Antarctic, apparently unaware of the city's collapse. Not named, but implied by description, the Elder Things appeared in "The Dreams in the Witch House". Ghouls See Pickman's Model. Gugs See The Dream-Quest of Unknown Kadath. Hounds of Tindalos A Hound of Tindalos is a fictional creature created by Frank Belknap Long and later incorporated into the Cthulhu Mythos when it was codified by August Derleth. They first appeared in Long's short story "The Hounds of Tindalos", first published in the March 1929 issue of Weird Tales. Lovecraft mentions the creatures in his short story "The Whisperer in Darkness" (1931). Description In Frank Belknap Long's original story, which deals with the main character experimenting in time travel with the help of psychedelic drugs and esoteric artifacts, the Hounds are