Some of these ruins are the focus of quests: The Collector, Nothing You Can Possess, and Secrets of the Ayleids. Other quests take the player into the ruins. Ayleid Ruins contain a variety of lethal traps such as swinging blades through certain hallways, spiked grates that slide down corridors, poison gas chambers, Dark Welkynd Stones that fire bolts of frost, spike pits and areas where the floor crushes passersby against a spiked ceiling, triggered by simply stepping onto the area of flooring under the spikes. It has been said by many NPCs that these traps are marvels, because the Ayleids have been extinct for so long, but their ancient traps are still fully functional. Ayleid ruins tend to contain leveled undead, bandits, marauders, monsters or vampires.