Hanging Rock

There are many dark places in the world, and the jutting stone shelf known as Hanging Rock is one such place. A battle was fought here, long ago. At the height of the battle, the hired mercenaries turned on their employers in a grand act of treachery. Their betrayal was their undoing, for to the dismay of the mercenaries, their employers won the day and swiftly enacted vengeance. Gallows were erected and the whole regiment hanged. As their blood seeped into the ground, the land around Hanging Rock was forever cursed.

Source
Blood in the Badlands (supplement)

pg. 9