The Zyanduun, which is also called the Underdelve or the Deepingdown, is the massive network of cavernous passages, stone cathedrals, watery locations, massive caves, and other such places that can be found beneath the surface of Zyathé.
Indeed, the Underdelve is a most dangerous and fearful place but also one with much life and interest. There are cities and towns in the depths… ancient ruins… fearful monsters… waterfalls, rivers, even sizeable lakes. Though many places are darkened and lightless, because of the presence of glowcrystals, luminescent fungi and lichens, and Illumi’ines (which are glowing crystallin tree-like formations formed of stone and crystals)… there are also many places that are alive with light.

Think of the Zyanduun much as you think of the surface-world. There are highway passages and road passages… safer areas and frightening wildlands… major underground city-states… farms where many differing fungi and other edible Deepingdown plant-life are grown along with Vonddrak and other animals raised for their meat.
It is just all confined to the stony world without a sky.

Your assignment is an interesting locality (small) such as an intriguing stone formation… a waterfall… a ruin… a bandit camp… a pond… a fearful cave… and Underdelvan Inn… a mine… a farm… a dark hole… or other such intriguing place that one might “run into” as they travel about in the depths. Again, this is a localized place. Something you can write about in a single page of content or a bit less. The format should be as follows: