TSR Code:

'Skullport, the Port of Shadow, is perhaps the best kept secret in all the Sword Coast North. A mile and a half beneath the orderly streets of Waterdeep squats the most wretched and lawless pit of thieves, buccaneers, slavers, and sellswords the Realms has to offer.  Under a mouldering tangle of catwalks threaded between the stalagtites and stalagmites of the cavern city, illithids, drow, beholders, and others plot and trade with emissaries from the surface.  Monsters prowl the dark recesses and alleyways, gangs of zombies shamble about performing menial labor, and anything and everything can be bought and sold: lethal poisons, foul tomes of forbidden magic, and slaves.
The only law is meted out by the enigmatic Skulls of Skullport. mysterious floating humanoid skulls whose capricious judgments and madness-induced destructiveness are the stuff of grisly travelers' tales.  Gold rules the ever-present twilight, and only those with keen eyes and blades may keep it long.
This book contains:
Maps and general information about the three layers and four wards of Skullport.
Descriptions of over 100 notable sites in the wards.
A partial map of the dungeons of Skullport - where the skulls throw the city folk they let live!.
Descriptions of notable NPs and power groupd of Skullport.'

See the Forgotten Realms Errata for this product.