Bism was the nation/state six thousand feet beneath Underland at the bottom of the World of Narnia, also called the Really Deep Realm. It was the home of all Narnian Gnomes where crystals, diamonds, and gold grew and thrived in a similar way to plants and whose "juices" could be harvested for food and drink. Once the gemstones died, they fossilised and became the hard gemstones that humans are used to collecting on the surface of the earth. Bism was also full of great lava rivers that were inhabited by Salamanders and Dragons; Bism was nearly visited by Prince Rilian during the Fall of Underland.