Braigiar has asked you to forge ahead to find Saeradan's encampment in the Windfells to the south. The southern Dunlendings are reported to have a large watchtower and encampment in this region, watching the Great North Road for unwanted intrusion from the direction of Bree or the Shire.
'We have sent many scouts ahead to determine the safest and most secret path through Enedwaith. There is rumour of a large ruined watchtower where Saruman's Dunlending minions have established a vigil.
'One band of scouts is led by Saeradan, who went south to determine the strength of the enemy there. By now they should be in the midst of the Windfells. When you are done here, seek him out and offer him what aid you can, for we must ensure that as many of the Grey Company arrive safely in Rohan as possible if we are to be of aid to Aragorn when the time for battle comes.'
Saeradan is at Echad Saeradan in the Windfells, south of Echad Dagoras.
Braigiar instructed you to find Saeradan and lend him your aid.