Marsh of Chelimber

The Marsh of Chelimber is a marshland, located in the Western Heartlands. It is bordered on the north by the Greypeak Mountains, and on the east by the Greycloak Hills. Several tributaries of the the Winding Water are either sourced or fed from this marsh.

Ruins
The Marsh of Chelimber houses many ruins in it. Many of them having been belonged to Prince Chelimber:
 * Chelimber's Keep: Prince Chelimber's former castle. Now ruled by Lizardfolk.
 * The Sinking Chapel: A former temple belonging to Chelimber, now filled with Minotaurs formerly serving the Betrayer and now the Zhentarim.

Roads

 * Aderspine Road East: A road overrun by Lizardfolk and undead.
 * Aderspine Road West: A road overrun by Lizardfolk who have built a huge village in it that eventually leads into Chelimber's Keep.

The Onyx Tower
A huge tower that housed the soul of Eldrith the Betrayer. The Onyx Tower would only fall when Eldrith died and vanished forever from the marsh when Eldrith died, although it did reappear there briefly when Mordoc SeLanmere brought it back. However, it was quickly moved to the city of Baldur's Gate shortly after formation.

History
The marsh was formally the Principality of the Snarling Boar. The marsh was created when two wizards fought here in 993 DR. The wizards summoned water elementals that then got out of control. The marsh was named for Prince Chelimber. who tasked one wizard to slay the other after a falling out.

After being chased into the marsh, Eldrith the Betrayer united the Lizardfolk of the marsh under her rule. She then built the Onyx Tower in the middle of the marsh. When Eldrith was killed, the tower fell and the marsh was put under Vampiric Rule. The vampires rebuilt the Onyx Tower only to have it fall again with the death of the Vampire Lord, Mordoc SeLanmere. However, the death of the Betrayer also resulted in some catastrophic changes in the marshes.

The marsh was given to the Zhentarim by the treacherous Lizardfolk. While some villages sprouted at the north of the marsh, these were either destroyed by the Lizardfolk or put under Zhentarim rule. The Zhentarim ruled with a cruel hand over these villages and whenever they would oppose Zhentarim rule, they were overrun by Lizardfolk and their Minotaur servants.

In 1497 DR, it was revealed that the Spellplague had weakened Zhentarim rule in the Marsh and they no longer ruled over it as they were not able to delegate it, thus they abandoned it. The Zhentarim still send spies there but the rule now belongs to Najara, a kingdom of nagas. Despite the rule of the nagas, the Lizardfolk are quite prominent in this new kingdom and are the majority of the inhabitants in the marsh are still Lizardfolk, undead and Minotaurs, they are just in a unified rule with Najara.