Questions (spoilers)
1. The two boys were not there to sell the fossil, but to rob tourists, right?
2. Why did the Fiennes character bury Driss' wallet? Did that really accomplish anything? If he wanted to hide things, why not just turn around and head home, pretending it never happened?
3. Did the father of Driss expect him to offer him the thousand Euros? Would it have made a difference?
4. At the end, did the friend of Driss do what he did on the orders of Driss' father or on his own initiative?