Wyllowwood

Wyllowwood was one of the sub-levels of the Twisted Caverns and the 5 overall level of the dungeon complex known as Undermountain. It was a magically-created temperate forest set within naturally-occurring caverns, encircled by the River of the Depths. The domain was created by the "Mad Mage" Halaster Blackcloak, to resemble the surface world, complete changing seasons, imported animals and a wide-open, illusory sky that perfectly displayed the stars and the moon as they appeared over Toril.

Description
Although its appearance was hidden with magic, the chamber that enclosed Wyllowwood had a ceiling 100' (30.5 m) and was bordered on three sides by the River of the Depths. Illusions were place 30' (9.1 m) above the ground that replaced the cavern's walls and ceiling with the appearance of the Torillian sky, complete with flawlessly-placed stars and other celestial bodies. While the illusions could not be dispelled, the true surroundings could be seen by means of true seeing or a magical item that duplicated its effects. While there was no natural gusts of wind or breeze that could be felt, Wyllowwood was warm during the day, as if it was basking in the rays of the sun, and as cold as could be expected during the night. The "seasons" of Wyllowwood changed according to the Calendar of Harptos just as they did on the surface.

Description
The beaches of the River of the Depths were quite narrow and comprised of small stones and pebbles. The trees nearest its waters were among the largest of Wyllowwood, with their tangled branches forming a thick canopy that extended beyond the water's edge.

The trees of Wyllowwood were both deciduous and coniferous and by and large were fully matured, often standing between 30'-50' (9.1-15.2 m) in height. Fruiting bushes, shrubs and flowering plants could be commonly found. Roses were notably exempted from this selection as they displeased Wyllow.

Entrances
During the 14 century DR, a number ways to enter Wyllowwood existed, although none were immediately apparent.


 * There was a magical gate hidden behind a wooden door in the basement of Twice as Nice, a shop off the Street of Lances in the Sea Ward of Waterdeep. The gate inflicted a poisonous disease on anyone who passed through it.
 * In the basement of Builders' Hall, the guildhall of the Guild of Stonecutters, Masons, Potters &amp; Tile-makers,, in the South Ward of Waterdeep, two statues of dancing figures acted as a gate to Trobiand's Graveyard. A person needed skip between the statues and focus on Undermountain in order to be transported.
 * A large stone urn in the northeast corner of Heroes' Garden in the Sea Ward of Waterdeep linked to a pool near the edge of the underground forest in Wyllowwood. The urn needed to be more than half full of water to function, and anyone being transported ran the risk of being affected by one of a number of magical conditions at random.
 * There existed an area of dead trees about three miles to the east of Waterdeep's East Torch Tower. The largest tree had a hollow trunk, and if a person stood on their left leg inside the hollow trunk, they would be transported to Wyllowwood.
 * There was a pair of stone arches near Seaeye's March near the Gulf Leap, 100 yards south of the Field of Triumph in Waterdeep. Anyone who walked between the arches when the full moon was shining on them was transported to Wyllowwood, but all their potions were stripped from their possession and faerie fire was cast upon them. If however the moon disappeared behind a cloud during the transportation, the person ended up being transported to a random position within Undermountain.
 * There was a circle of standing stones north of Waterdeep. If an individual walked inside the circle while clouds cast a shadow over them, they were transported to a random location within Wyllowwood's underground forest.
 * There was an old elven tune etched near the ceiling between two pale blue columns in the House of Song, the guildhall of the Council of Musicians, Instrument-Makers, and Choristers, in the Trade Ward of Waterdeep. If this song was played, a gate opened between the columns and transported those who stepped through it into the river in Wyllowwood.

Following the Second Sundering, a number of other entrances to Wyllowwood opened up:
 * The River of the Depths could be traversed from the Twisted Caverns.

Notable Locations

 * River of the Depths:
 * The dark and sluggish river came down from the Twisted Caverns and lazily circle around Wyllowwood before continuing into the depths of the Underdark.

Exits
The following passageways led down to the deeper levels of Underdark:
 * A tunnel beneath the River of the Depths continued to the Lost Level.
 * The caverns east of Wyllow's Tower, across the forest and the river went down to Maddgoth's Castle.

Inhabitants
Several natural and magical creatures lived within the forest of Wyllowwood; many of them, along with a great number of trees, had been awakened by magic and granted sentient intelligence. Among these species were naturally-occurring creatures like boars, black and brown bears, elks as well as giant wasps and giant bats. However, it also served as home to colonies of goblin werebats, groups of cohabiting ettercaps and giant spiders, basilisks, will-o'-wisps and cloakers.

Wyllowwood attracted many worshipers of the deity Malar during the 14 century DR, as the subterranean forest was quite private. They conducted their High Hunts within its woods and the winner was determined by whomever collected the most shields and skulls within a single month. While Wyllow originally allowed them to hunt within her domain, they abused this privilege and were turned away by the druid and her green dragon ally.

This ally was Valdemar, a young green dragon that originally encountered Wyllow under antagonistic circumstances. Upon discovering Valdemar within her domain, the elven druid contacted a band of adventurers to combat the beast and turn it away. During the battle, Valdemar received a nearly-lethal injury by means of an intelligent sword that greatly changed their perspective and caused a shift in their general alignment. Following this event, Wyllow reconsidered the relationship she could have had with Valdemar, found a place for it within Wyllowwood's ecosystem and the two enjoyed a peaceful and mutually beneficial coexistence.

History
Sometime during the 13 century, Halaster's apprentice Yinark met the moon elf Wyllow while he was away from Undermountain. The two fell in love and they joyously returned together to Yinark's home, deep beneath the city of Waterdeep. However, Wyllow was crestfallen when she saw that the dungeon that her beloved called home was so vastly different from the woods she called home. Determined to keep Yinark and his new love content, and prevent them from leaving Undermountain, Halaster used multiple castings of the spell wish to create Wyllowwood — a subterranean domain of nature, named after and crafted for a single individual.

However grand, this magnificent deed was not enough to ease Wyllow's growing lethargy. Eventually Yinark outright forbade her from returning to her home on the surface and Wyllow filled with despair. Their relationship became acrimonious before turning violent, when the two fought each other in a vicious spell-battle. Wyllow slew her former lover and, wracked with guilt, remained within her domain as per Yinark's wish.