Well, I'm just saying. Revan hinted that it's a high-level zone.
Alternatively, we can take on the Fire Elementals, especially since Gnil seems to have one of the key items, but I'm afraid we'll wipe out.
Added 3 minutes later
I still don't understand... Do I need to find 6 books and 9 portraits somewhere?
1 was in the Equalizer, 2 were found in the Antrum by the Phantom, 3 are behind the partition, 4 are in the Abyss, 5 are in the Lake City, the rest are unknown.
The books and portraits for the quest are marked as "indestructible" for a reason.