The Old Cults are groups of nearly always insane and violent worshipers of the ancient beings known as the Great Old Ones. They perform prehistoric rites in dark places, designed to bring about the return of their gods to Golarion from an unknowable region called the Dark Tapestry. Other followers try to open magical doors to their patrons in an attempt to summon alien creatures, which are then released to wreck havoc. Some scholars believe that the Great Old Ones are simply the inventions of their fever-brained devotees. The fact that clerics of these cyclopean monstrosities can draw on divine power and cast spells, however, means there is some truth to their beliefs.