Doorway to the Red Star
This mysterious ring of magnetic crimson stone hangs, humming, in the empty space of a collapsed courtyard, and lends its name to the twisted, long-overgrown cathedrals that surround it. Once the seat of power to an ancient cult called the Throat-of-Nothingness, the vanished lords of that nihilistic religion abandoned the winding buildings to rot. In later centuries, the Doorway to the Red Star was the stronghold of the King of Biting Ants, a sorcerer not living, nor dead, nor undead, but somehow composed entirely of innumerable poisonous insects. The white-masked arcanist used this strange place as a stronghold from which he sought to devour the sun and rule the world, but it is said that even he did not truly comprehend the power of the Doorway. Although the legendary Ten Magic Warriors laid his red-cloaked armies low and undid the sorcerer’s fell schemes, the Doorway itself and whatever treasures and horrors lie below the cathedrals were left untouched, by command of Old-Mage Jatembe himself.
Sources: Pathfinder Chronicles Campaign Setting