Has anyone noticed frost giants outside of the forgotten vale in the snowier area's of Skyrim? Another thing, do they re-spawn?

i have only seen them inside the forgotten vale, there are 5 of them each holding a paragon witch you can use to teleport you to some treasure.

if you can find them outside forgotten vale that would be cool as i hate only being able to find the giants in the whiterun hold

Use the http://www.gamesas.com/forum/196-dawnguard-cheats-hints-and-spoilers/ for this