"The hoard is supposedly buried 15 metres (50ft) deep on Robinson Crusoe island"
"Supposedly"....means they have not dug it up yet. So until they do, it is speculation.
lYeah, I wonder how they know the composition of the trove--inca jewels and Papal rings seem a bit of a stretch in one hoard to me--since its still buried.
Here is a video feed. It says the booty will remain in the ground until the Chilean government agrees to give the Wagner Corporation half of it.
Wagner is keeping absolutely mum on the location!
http://xtramsn.co.nz/news/0,,11965-4826318-56,00.html