- the darkness under the earth, imagined either as the abode of sinners after death or of all the dead.
- a volcano in Antarctica, on Ross Island. 13,202 feet (4,024 meters).
- the god of darkness, son of Chaos and brother of Night
- the darkness below the earth, thought to be the abode of the dead or the region they pass through on their way to Hades
- a volcano in Antarctica, on Ross Island: discovered by Sir James Ross in 1841 and named after his ship. Height: 3794 m (12 448 ft)
