The Zhélruka are preparing a survey of the ancient Glimmerdeep mine.
'Very well, then. You may accompany us on the expedition to Glimmerdeep mine. As in preparation, so in the journey, each must have his duty. Yours shall be to scout the path ahead. You are unburdened with the heavy load some of us bear. Also, you can alert us to danger before we ourselves are in peril.
'We must make our way west from here, toward the peak named Thrumfall, where the path to the mine may be found.'
You should scout ahead of the expedition, west from Skarháld, along the path up Thrumfall Mountain, where Glimmerdeep can be found.
You should eavesdrop on and defeat the Orcs guarding the path to Glimmerdeep.