Kæmpe labyrint/dungeon under Waterdeep.

Vist oprindeligt bygget af troldmanden Halaster. Som måske stadig vedligeholder det?

Der er mange indgange. Men den mest berømte er brønden i Yawning Portal - som efter sigende skulle være fundamentet af Halasters oprindelige tårn.

Dubbed “the grain of the Underdark,” a bluecap is a tall, slender mushroom with a bright blue, bell-shaped cap.

Although bluecaps are inedible, their spores can be ground to make a nutritious, bland flour. Bread made from bluecap flour is known as sporebread or bluebread.

One loaf is equivalent to 1 pound of food.

This shelf-like fungus resembles a mass of rotting flesh, but it's surprisingly edible. Though it can be eaten raw, it tastes better roasted. A single sheet of ripplebark yields 1d4 + 6 pounds of food.

Known as “devil's mushroom,” a timmask is a 2-foot-tall toadstool with orange and red stripes across its beige cap.

Uprooting or destroying a timmask causes it to expel a 15-foot-radius cloud of poisonous spores. Creatures in the area must succeed on a DC 14 Constitution saving throw or be poisoned.

While poisoned in this way, a creature is under the effect of a Confusion spell with a duration of 1 minute. When the spell effect ends, the poisoned condition also ends.

A trillimac is a mushroom that grows to a height of 4 to 5 feet and has a broad, gray-green cap with a light gray stalk.

The cap's leathery surface can be cut and cleaned for use in making maps, hats, and scrolls; its surface takes on dyes and inks especially well.

The stalk can be cleaned, soaked in water for an hour, then dried to make a palatable food akin to bread. Each trillimac stalk provides 1d6 + 4 pounds of food.

A tongue of madness looks like a large human tongue.

Although it is edible, it holds no nutritional value. A creature that eats this fungus must succeed on a DC 12 Constitution saving throw or compulsively speak aloud its every thought for the next hour. The effect can be ended with a Lesser Restoration spell or similar magic.

A zurkhwood is a mushroom that can grow up to 40 feet high.

Its large, grain-like spores are edible (one specimen provides 1d4 + 4 pounds of food), but the fungus is more important for its hard and woody stalk.

Zurkhwood is one of the few sources of timber in the Underdark; it is used to make furniture, containers, bridges, and rafts, among other things.

Skilled crafters can use stains, sanding, and polishing to bring out different patterns in a zurkhwood stalk.