Iron may cause your stools to turn black, an effect that is not harmful. If your doctor has prescribed this drug, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
In the Reeking Cave, visited during the quest Diplomatic Immunity, there is a Dark Elf corpse. In Darkshade, southwest of Windhelm, the body of a dead female Dark Elf can be found at the back of the cave near the bottom of the ramp that leads to a chest. A permanent corpse of a Dark Elf can be found at Evergreen Grove. At The Ritual Stone there is normally a Dark Elf Necromancer who can be killed and then have her blood harvested. Drelas Cottage, on the opposite side of the mountain to Morthal, contains a hostile Dark Elf mage named Drelas.
The third Aetherium Shard is located in the Storage Room of Mzulft, which is found if you turn to the West before you enter the Dwemer ruin. I believe it has a high level lock guarding the entrance door. Mzulft is located to the far west of Skyrim, north-west of Riften.he first Aetherium Shard is located in the final room of Arkngthamz. The Dwemer Ruin is found south-east of Markarth, in the Reach.