» Thu Jul 12, 2012 1:18 pm
It's a shellbug helmet that you use shellbug chitin to make.
Also, this is from the Dawnguard DLC, you should use the http://www.gamesas.com/forum/196-dawnguard-cheats-hints-and-spoilers/ for this type of question.
Anyways, since this was moved to the proper section, look in the Forgotten Vale for 2 shellbugs you can mine. One is in The Forgotten Vale Cave near the area for when you first enter it. Look for the pull rope to open the area with it. Another is in a slightly hard to find cave called Sharpeslop Cave. Follow the wall while going down the ramp and you should find it.