This area is located at 1586W, 1816S, and is marked on the player's map after successfully finding and decrypting Prowling Master #2 note. To the north east of the starting point you will find a hollow tree stump with note #3 of the Prowling Mastery quest.
The stump is marked by an unlootable skeleton laying against it, along with a rusty dagger and rusty sword.
The area is guarded by 13 Brute Fangs. The guards can be avoided using either invisibility or stealth.