Terenialia is an underground kingdom in The Legend of Zelda (series).
Terenialia is a kingdom beneath Hyrule. The kingdom's scenary is a mix of the medievel times and science fiction's steampunk themes.
Dark forces were overunning the underground kingdom, causing everything to go bad. The dark forces also plan to take over the kingdom above. Link, Princess Zelda, and their closes friend, Rononzo, find this place and now it is up to them to stop these forces by collecting artifact pieces which puts together a magical key to the sacred item that defeats these dark forces.