Dredusarian Pass is a canyon in northern Aradia. Eastern end of this canyon is called Thundersound Vale. Canyon is crossed by a pass, that connects Moonlight Lows and Touchsky Mountain with outside world.
Dredusarian Pass is a rather unfriendly area. It is inhabited by countless beasts, that are willing to attack anyone who wanders here.
It is believed, that Dredusarian Pass got it's name from Troll chieftain, Dreldus, who led his army through this pass to fight against Elves, who occupied much of Troll territories. Unfortunately Dreldus never got through this pass, marking the end of Nuzanaar empire.