Land of the Lions

The Lake of Steam, also known as Arnaden, was a region in South Faerûn. Despite its name, the Lake of Steam was a quasi-inner sea connected to the Shining Sea.

Geography
With the Shaar on the east, it separated the Shining South from the rest of Faerûn. On its shores was a collection of free cities, mainly on the northern and western sides. The southern side, by contrast, was a collection of kingdoms collectively named the Border Kingdoms. At the center of the lake was the Arnrock.

History
By 1369 DR, the Twisted Rune placed a magical gate in the area to allow for instantaneous movement to other locations.

As of 1479 DR, the Lake of Steam was about half the size it was before the Spellplague. The Arnrock was in the eastern half of the sea rather than the center, and the eastern portion of the sea ended about thirty miles short of the town of Derlusk, where Derlusk was once on the southeastern coast of the sea. A large lake was separated from the main body of the sea and lay near the ruins of Innarlith. The Qurth Forest was a small fraction of its former size, and the Duskwood was completely gone. Suldolphor was also in ruins. ,

Settlements

 * Ankhapur : Metropolis, population 33,514.
 * Border Kingdoms : Independent "kingdoms," total population around 9,485.
 * Dalelost : A ruined city, inhabited as of 1372 DR by clerics of Bane.
 * Derlusk
 * Innarlith : Metropolis, population 48,691.
 * Mintar : Large city, population 21,500.
 * Saelmur : Metropolis, population 25,294.
 * Suldolphor: Metropolis, population 143,687 in 1374 DR, pop. 0 (annihilated) in 1479 DR. Destroyed during the Second Era of Skyfire by efreet and djinn.
 * Theymarsh
 * Tulmon : Metropolis, population 25,000.
 * Yeshpek : Large city, population 23,000.
 * Yhep : Small city, population 5,691.

Sourcebooks

 * Forgotten Realms Campaign Setting 3rd edition
 * Player's Guide to Faerûn
 * Forgotten Realms Campaign Guide