The ziggurat that Kalak constructed for his ascension to dragondom still towers over the cityís center. It remains a constant reminder to the people of Tyr of the cruelty and oppression that once ruled their city. To this day, it remains an object of fear and loathing. The great tiles and mosaic works lie in disrepair about the ziggurat. Few have dared enter and the ziggurat has become the focus of stories told to frighten children into bed.
There are three entrances into the ziggurat. The only conspicuous one is located at the top of the great stair. Atop the stair is a small antechamber. The interior walls are lined with obsidian as black as Kalak's heart. On the right side of the room a stair descends. At every level is a landing where the stair turns to the left. After a complete circuit of the compass points, the descent ends at a large austere room. The walls, ceiling, and floor are all covered by the same obsidian bricks. Shredded paintings cling to the walls, the images of the dragon once portrayed are now barely visible. Shattered obsidian is everywhere and a strange odor permeates the area. A dried black ichor covers the floor. A trapdoor is located in the center of the floor. It leads to an underground tunnel, circular and roughly man-sized. The obsidian brick-lined tunnel extends to the east and west. In one direction the tunnel dead ends under the gladiatorial arena. The arena end was filled and sealed before the marketplace opened. The other corridor ends beneath the Golden Tower. Defilers under the orders of King Tithian placed permanent magical seals, guards, and wards to seal the entrance.
Shortly after Kalak's death, a strike force from the Veiled Alliance entered the ziggurat to learn the secret of Kalak's attempted transformation. They went armed with spells and Sadira's information about the location of Kalakís body and the mysterious objects needed for the transformation. When they arrived, Kalakís body was gone, but the black obsidian balls remained. Different groups including various rogues and bards have attempted to use the ziggurat as a base of operations. All these attempts have failed.
City-State of Tyr, p.48-49
So I am about to run Freedom for my 3.5 group, and one of the places they might want to explore, post adventure, is the Ziggurat. In the days shortly after the assassination, I expect Tithian will be keeping nosy people away from the Ziggurat "for their safety" (and also so he can investigate its secrets and recover any items of power Kalak may have left behind) But in the event they decide to sneak in I would like there to be more than what was described above in it. At the very least there should be some magical traps and guardians. I am a bit of a newb to GMing so I thought I would pick your brains for ideas.
In a previous thread, http://arena.athas.org/t/kalaks-ziggurat/577 the idea of there being an inverse ziggurat underground, making the whole structure resemble an octahedron was brought up. I also like the idea of there being an upside-down "reverse-ziggurat" in the gray. That way when they get to be high enough level they might find a way to open the gate and investigate further into Kalak's secrets.
So what would you put in the Ziggurat?