Trobriand's Graveyard

Trobriand's Graveyard was an area of Undermountain used as a scrap heap by the mage Trobriand.

History
Each time he needed to dispose of a failed creation, Trobriand used his wand of rejecting to send it to the graveyard. He assumed that everything sent there was inactive, but later discovered that this was not the case, and became fascinated with the interactions between his failed creations. He then set about supplying the mechanical inhabitants of the graveyard with what they needed, and experimenting with their reactions.

The name "Trobriand's Graveyard" was coined by Halaster, Trobriand's ex-master, after he showed it to him. As of 1368 DR, it was led by a scaladar known as Squch and populated with ten silversanns, twelve thanatars, and up to thirty ferragans, as well as many more generic mechanical creatures.

Entrance
The entrance to the graveyard was a gate that appears like a will-o'-wisp. It traveled Faerûn autonomously, although it was more likely to appear in areas where there had been recent heavy magic use or where there were large collections of magical items. It could be confused by an anti-magic shell or magic with a similar effect, and could be evaded by plane-shifting. Otherwise, the gate would attempt to teleport people into the graveyard (without their consent or knowledge) so that Trobriand could study their interactions with its inhabitants.