Catacombs of Kabal: Chapter 1
Raine had to keep all of this quiet as he knew should a battlemage like himself be seen going into the underdark, which by itself was forbidden, it could be assumed he was in fact the necromancer.
the Plot and the Princess
When he ruled he would have all the time in the underdark, and the surface world would come to know the wrath of a pit fiend-emperor.
Pathfinding: An Adult Choose Your Own Adventure, First Entry
Noticed dark shapes carrying struggling sacks into the sewers of the city, and so this path will take the adventurer into the depths beneath avalon city, a city that is known to have been built upon truly ancient ruins that are also known to connect to the underdark
Valley Influence
"wait, so this isn't the underdark?" falrhior asked. "no, just an underground tributary chamber," the drow explained.
The Windsar Adventures Part 10: Gathering Forces
Unfortunately for urla, her efforts to unite the underdark tribes hadn’t gone as well as she’d wanted.
Sent Kobold Chapter 9: Kobold's Lair
Pretty big, since it was a way into the underdark." "the underdark? you mean the place filled with a lot of stuff that are almost always out to kill you? the maze of tunnels under the earth that many would lose the way in?
The End (Kreet 31)
But no plans for what it will be yet, and it will have to come at the conclusion of our d&d game when hopefully kreet can find her way out of the underdark. which may be quite a while.
Consequences (Kreet 48)
"i want to go back to the underdark, kreet. she might still be there." "sig! no. think of your genitalia! besides, she said she'd meet us again before my children are born." sigmundurr turned to kreet with a weak smile.
Bishop - Kreet 66
Fellow kobold, ex-slave of the dark elves of the underdark, now freeman. but most of all, he is my husband and father of my children yet-to-be-hatched." "and bartender!" kallid added hopefully.
Sent Kobold Chapter 13: Solstice's Carnival
"if i've learned anything from my time in the underdark, it's that gold and silver can solve almost anything." "and if it can't?" "it's the underdark. i was with the drow. what do you think?" iskdiwercaesin shrugged. "...
Far Flung Future
This far down he would have to watch out for pockets of magical radiation, as this depth was most definitely underdark-type deep.
Prideful Pair: Chapter Two
Trath knew that his lord had requested the pair be sent west, to handle some problems with the goblins and the underdark.