This 64-page book contains details on the following megadungeons: Candlestone Caverns: An extensive cavern network in rural Andoran that connects to the deadly Darklands below. Gallowspire: One of the deadliest dungeons in the world-the prison of the lich known as the Whispering Tyrant. Hollow Mountain: The mysterious mountain stronghold of ancient Thassilon's Runelord of Wrath. Pyramid of Kamaria: The deadly tomb of one of Osirion's most notorious and feared pharaohs. Red Redoubt of Karamoss: A unique siege castle filled with weird technological marvels from the savage land of Numeria. Zolurket Mines: Abandoned by the dwarves who created it, this mine now serves as the lair of a sinister undead horde.