From PathfinderWiki

Zradnirras is a ruined city along the Myrfrus River in eastern Iobaria. Once a powerful city for both the cyclopes of Koloran and the humans of Iobaria, housing the legendary Zradnirri Arcolleges, the city is now now a goblin- and kobold-plagued ruin. These savage humanoids worship a family clutch of dragons who hunt both the city, and the nearby Deeprun Crevasse for prey.[1]