Story- Chambers of Knowlege

Lara is invited to a hidden Library somewhere in Northern Europe by Von Croy.This library is patronized by great minds all over the 
world but ofcourse..they are all away on sabbaticals at the time so Lara is free to roam.Lara is told a special secret by Von Croy.
 An ancient book is hidden somewhere at the Library containing all the knowlege of human history.Its hers to borrow
 if she can make her way into the library, defeat the guardian who dwells in mythology- 
in the underworld beneath the sacred Tree of Life.....and retrieve the book.