Castle of Tol Randai

An old ruined castle on the island of Island of Tol Randai, Ankara 
The pirates on the island were scared having found an old text describing the history of this building and the noises, lights and tracks found around it, and did not want anyone approaching it or setting off the horrors within. 
The castle housed a temple of Elros Demigod  till some hundreds of years ago, but this was built over a temple of Set God , accessed by a staircase protected by symbols, to a church hall with a roof that spiralled upwards in a curve like a serpent resting in its coils, a vary disconcerting chamber. 
In that chamber was an old Deis, that was of Elros, but this sat on the old one of Set.
Under this was the staff of Set which also had a curved S on the end that acted as a key to enter the last chamber, which housed a portal/door to communicate or summon Set himself
In addition to the protection symbols on the stairs their were 6 Iron Golems protecting this area that would come to life when the alter was approached
These were destroyed by an interpid band of adventurer's sent to collect the staff for Alaria, wizard of Ankara , who now has the staff 
In the old store cellar, a Yuan Ti was waiting to collect the staff, but being unable to access the chamber due to the protective symbols (which seemed to have a greater effect on followers of Set), she was waiting till a party collected this staff, but in this endevour was found and slain by this band of adventurers