Mind you: this is a second-hand product! It is in excellent condition though.

Beneath Thunderspire Mountain lies a sprawling network of mazes, tombs, and caverns collectively known as the Labyrinth of Lost Souls. In recent years, this vast labyrinth has become a living dungeon where trade between the surface and subterranean worlds is possible. However, beyond the well-lit halls where prospectors, merchants, and traders convene lies a darker world where adventurers battle monsters and fiendish beings perform secret rituals for their dark masters. . .

Thunderspire Labyrinth is a D&D adventure designed for heroic-tier characters of levels 4-6.