Wall of banishing

Mini Quest
Anyone trying to obtain the Crimson Orb must first touch the Wall of Banishing to the south and receive the message that it is blocking the cave. Take care as there are multiple high level orcs wandering in the area and they will most likely all aggro you if you're not careful. After touching the wall, head due north to the top of the fort at (J-8), and speak to a Tarutaru by the name of Sedal-Godjal to receive the quest. He will give the quester a White Orb key item which must be dipped in the 4 red pools across Davoi. The White Orb key item will change to a Pink Orb when you have gone to 1 pool, a Red Orb when you have gone to 2 pools, and a Blood Orb when you have gone to 3 pools, before it finally becomes a Cursed Orb at the 4th pool. 
(WARNING: When you dip the orb into the 4th pool it curses you, so plan accordingly. However, this Curse can be lifted with the spell Cursna.)
The four pools are located as follows:
* The Howling Pond is located at the NW corner of H-10. (Orcish Footsoldier & Orcish Gladiator check EP but do not aggro a lvl 59.)
* The Wailing Pond is at the NE corner of (L-9).
* The Screaming Pond is at the NW corner of (E-8).
* The Groaning Pond, which is not displayed on the map, is found by following the river at (H-6) north and to the east. Gain access to the river at (D-8), (J-10), or (H-8). (It's possible to get aggro from the cliffs above the river around (I-8) so you may want to use invisible.) 
Return to Sedal-Godjal with the Cursed Orb, and he will turn it into a Crimson Orb. 
(FYI, when the quest is done and the curse is lifted, don't rest where visible, or you'll attract aggro from below and have the whole zone of VT mobs on you in minutes.)