Serpent's Coil is a winding cave system, located in eastern Blasted Lands, that had been occupied by evil cultists worshipping Kirith the Damned. Several burnt-out orcish structures stand here, remnants from the Second War.
Archmage Allistarj operated his Shadowsworn forces from within this small labyrinth, that is until he was killed, now the Shadowsworn forces continue on with someone else leading them. Near the entrance is a chest with the inside.
Deep within the cavern is a gnome named Kasim Sharim, and although he's an Alliance member he has setup a small camp within the cave with a Horde banner.
When the Iron Horde began their invasion, they took control of the cave.