Searching for Duncadda

"The East Wall, the mountain range due east of Faldham that marked our border towards Nen Hithoel, had been the talk of the town for the past day or two. Hunters and peasants alike in the area had heard screams of battle and terror echo from the mountain top, and many had seen starved and wounded orcs flee in terror down the mountain, only to be cut down or shot by the patrols upon the fields. It was known that orcs held a camp up there, from the time we ascended the mountain in search of the hidden gold and minerals the dwarves had sought."  ( It came from the East Wall ; Blood and Battle. by Waelden.)

Waelden and Yllfa search the mountains to the east of Faldham. There is evidence of much slaughter of orcs, but who is behind it, and do they still live?