look at map here:
http://www.larian.com/forums/ubbthreads.php?ubb=showflat&Number=372296#Post372296
find blue number 11 at the 1st map, right under is red dot, thats the cave where are his ran away creatures.

niberius storage is under red number 1.
but u can get there only by teleport what is right near that storage(blue light dot with line) and u can use teleport only when u have found all 4 pergaments scrolls(Gamol, Mith, Witega and Scopg).
Then u need to translate them at ZixZax(green #19 at map)