The presence of goblin-spies in the Mirk-eaves also infers the presence of multiple enemy encampments somewhere in the vicinity of the Mirk-eaves.
'${PLAYER}, while you were out about your tasks, Falasgon sent word that another enemy encampment has been discovered near the Gostannon. You should speak at once with Dannaswen in our way-post atop Amon Angened above us to the north.'
Dannaswen is at Amon Angened, atop Amon Angened to the north, above Echad Mothelen.
Glamodúd has asked you to speak with Dannaswen regarding the Orc-camp near the Gostannon in the north.