When you think you have solved the puzzle you can check your coordinates on Geochecker.com.
In case you were wondering... The picture was taken of the ossuary at the Monastery of the Great Meteoron in Meteores, Greece. Meteores translates from the Greek literally meaning "suspended between heaven and earth" as the rocks appear to be 'suspended' in the air. The skulls all belong to former residents of the monastery, the best explanation I can find is that the bones dug up a few years after burial and stored in order to conserve the limited space.
At time of publishing the cache contains the following items:
A pair of 'Nun-chucks'
A PC Webcam
2x Stephen King DVDs
Pocket Shocker game
Padlock + Keys
Official Sun Open Solaris CD (v. 2008.11)
512MB PC2-5300 Desktop PC RAM
Small Canadian pinbadge and compass
FTF Prize is an Unactivated Trackabulldog Geocoin
If you need further help with this cache, please contact _TeamFitz_