The Torment of Caledor

The dogs of Caledor still try to resist us, though their defeat at our hands is virtually assured. We must show these pathetic whelps that there is no hope for them. Their blood must be spilled, their spirits broken, their lands destroyed. I shall be the harbinger of their torment, and you shall be my instrument! As a first means of showing them that their defeat is a certainty, we will strike at their camp in the valley. Fight your way into their pitiful camp, and set fire to all you see!

Travel to Senlathain Stand, the High Elf resistance camp. Put an end to their meddling by using the brambles within the camp to set it ablaze. When done, return to Serys Nyralath at the Conqueror's Watch warcamp.