Kill the shredders XT:4 and XT:9, then return to Seereth Stonebreak at the border of the Stonetalon Mountains and the Barrens.
There is a relation to the spiritual magic of shaman and the natural magic of druids. This is why we shaman can hear the plea of the spirits of Stonetalon. Many of their whisperings are lost to me, but one message, one vision, is clear...
I saw a vision of two man-shaped machines in Windshear Crag, northwest of Greatwood Vale, felling trees with impossible speed. These metal beasts must be stopped!
In my vision, the machines were marked with strange symbols:
XT:4 and XT:9.