Considering helping out on the wiki to keep it updated - in particular the changed unique items need to be updated to reflect 2.6.0 changes.
Mods and base items have been updated to 2.6 values - skill progressions on some skill gem pages may need updating or some bugs need to be fixed.
A branching maze of tunnels ends at a large chamber. After killing the Great White Beast, an exit on the back wall leads to a random location in the Old Fields.
Covered-up Hollow has a chance to spawn.
The following divination card can drop in this area: