Hunting the Mammoth [Quest]

Text of the Quest:

I need to find the mammoth by following its trail in the wilderness southeast of Falinesti Wayshrine. Narion told me that I can see the signs of its passing by crouching low to the ground and looking carefully around me.

Narion: Tread lightly now. The timber mammoth is as rare and skittish as they come. I nearly had it, but the damned birds spooked it.
Hero: You're hunting a timber mammoth?
Narion: That's what I said, isn't it? The mammoth went into the water and I lost its trail. Care to try your hand at tracking it?
Hero: How do I track the mammoth?
Narion: Crouch low and look for traces of its passing. Mammoths aren't the most graceful creatures. Look for tracks, broken branches and the like. Track it, kill it, and bring me its tusk as proof.
Hero: I will bring you the mammoth tusk.

Narion: Was your hunt successful?
Hero: I've got the mammoth tusk.
Narion: Not bad. Not bad at all, to kill a rare specimen such as that. You'd make a fine member of the Hounds someday. They're a company of trophy hunters. I've been with them for years now and I've never seen anyone as quick a study as you.
Hero: Complete Quest.