This quest is initiated by examining a scroll next to the skeleton at the entrance of The Obelisk of Lost Souls( -6.96, 623.17, 142.41 ) . It unlocks the keys to progress within the zone. You must slay the following monsters:
Soul Harvester Kul: -17, 615, 406
Soul Harvester Na: -29, 613, 316 or -11, 611, 267
Soul Harvester Zej: 140, 639, 400
Soul Harvester Gron: 110, 620, 250
The shadowed men in the zone are the placeholders. Kill them to spawn the rares.
This will grant you access inside. Though you will still need to do another separate quest, Summoning the Creator, to unlock the creator door and the lower levels.
I found a scroll that contained the notes of an unlucky adventurer. He explained through his observations that there are four large shadowed men that he had seen entering and exiting the Obelisk. He is under the assumption that these four beings hold the key to getting in. I need to seek out the four and destroy them to see if I can find a way of getting inside.
I need to find and kill the four shadowed men the adventurer spoke of to gain access into the Obelisk.
I need to kill Soul Harvester Kul.
I killed Soul Harvester Kul.
I need to kill Soul Harvester Na.
I killed Soul Harvester Na.
I need to kill Soul Harvester Zej.
I killed Soul Harvester Zej.
I need to kill Soul Harvester Gron.
I killed Soul Harvester Gron.
I killed the four shadowed men and can now use their essences to gain access into the Obelisk.
I killed the four shadowed men the adventurer spoke of. I took from them their essences that animated them, and should now be able to trick the Obelisk into believing that the four are present when entering. I now have access to the door into the Obelisk.