The word Giant appears 8 times: 2Sa 21:18 And it came to pass after this, that there was again a battle with the Philistines at Gob: then Sibbechai the Hushathite slew Saph, which was of the sons of the giant.
But you say this is in Peru, not the Holy Land. Just south of Albuquerque NM is a large stone dated some 3,000 years old, it has on it the Ten Commandments, written in Hebrew.
thanks for your post. I did not know about the Los Lunas stone. here is some info on it for others.
http://www.econ.ohio-state.edu/jhm/arch/loslunas.html
As for the skull, testing for human DNA should be easy as there is plenty of material extant.
The stone can be dated, reasonably, but the engraving cannot. Mormons have tried to make a similar claim regarding personal use decalogue stones found in Ohio near an Indian burial mound. The truth is radically different from the LDS inc explanation, but they continue to make their outrageous claims, even teaching the lie as fact in BYU classes.