[blam]

"Don't buy it though seems too small. Plato also speaks of it sending great armies abroad so I would think the island would have been larger and what would have been the source of its great power?"

Plutarch (Greek) writes of his tour of the ruins of Carthage decades after it was destroyed and mentions seeing descriptions of Atlantic Ocean travel by the Carthagenians.(sp) There are (man) altered waterways in the Amazon basin that some have said would have taken a human population of fifty million to have accomplished, they are ancient and little examined.
Also, I've read one anthropologist say that he thought that Solomon's gold mines may have been at the head waters of the Amazon River.

[justshutupandtakeit]

There is another theory regarding the metal working within S. America. In fact, Zacharia Sitchin has written four books about his theory and marshalls impressive evidence for it.

I go with Plato though.