jones reads the letter and the puzzle and says that oxley was referring to cuzco, peru. jones and williams fly down there, where jones learns that oxley was put in a jail a couple of months ago. in the prison, oxley scratched out some drawings. jones and williams head to a grave site where they believe francisco de orellana lies buried; legend tells that he found the crystal skull but was never found. they find the skull and come up only to find mac and some soviets pointing weapons at them.