The Troll Caverns to the northwest of the underground Shanbar were but
a complex labyrinth of sewer drainpipes inhabited by a clan of
half-troll, half-humans during the Third Age of Magic. This maze of
winding pipes with entrances both at the overworld and underworld,
permitted the trolls quick access to both levels of the Valley of the
Sparrows.
In 1647 GUE, an unknown Sweepstakes Winner
defeated the clan's cowardly leader.