Undra

Undra is a bit of a mystery considering how much of it is swallowed in forest, especially Deepwood Forest, where rare flowers and crystals can be found. It is also the home to many ancient creatures said to have been there since the Archanes' creation. Not a lot of light seeps through Undra, giving it a bit of a Gothic vibe.
The city and houses are built inside the massive tree trunks in the most elaborate canopy-village. The architects of the complex sky-bridge system are some of the most renowned in the realm.
The Agate Castle and Amethyst Village are glorious structures of lavish and complex design. This is the realm of artists, as many of the greats grew up in Undra. The West Surface Gate is also located there under careful guard. Blackwater Cavern is another entry point to the complex submerged river system.