[Gatts]

So - you are on one of the three location in Elven lands - good news is that 2 of these locations do have Book Of Death:
How to know you are on the correct location (map)?
The surroundings around the book of death (yep - it is solidly attached to the map - on adventure map - it is not an artefact you could carry) is dark
dark -> the land around (also visible in the map - when your press "map" button) is necro-like - dead vegetation, dark clouds... just dark

Search for dark small areas in the elven lands - and there you will find pedestal with opened book - would look like little bit creepy.

Hint : one is near the elven guy who lost his girl-love and is crying near her grave (is fine quest)

Good luck!