From PathfinderWiki
(Abyssal realm)
Ruler Yamasoth & 13 warring, powerful demons
Ecology Subterranean cavern
Denizens hideous results of Yamasoth's experiments
Description Fought over cavern realm

Sekatar-Seraktis is the name of an Abyssal realm partly ruled by the nascent demon lord Yamasoth and partly by thirteen warring, powerful demons: balors, vavakias and vrolikais. Geographically, the realm lies at the centre of Yhidothrus's Spiral Path and is a vast subterranean cavern.[1]

Kingdom of New Flesh

The Kingdom of New Flesh is Yamasoth's vast realm on the plane; here one may view the results of the Polymorph Plague's many experiments.[2]