You might have more response from /r/Askanthropology. I know of no archaeological evidence of a race of giants (there have been a few large people here and there, often celebrated with the title 'giant' because they are at the upper range of growth possibilities). The problem with your question is that there are not likely to be authorities on the archaeology of something that doesn't exist. There are people who construct hoaxes; there are people who believe there are conspiracies to cover up evidence of these sorts of things; and there are people who believe that a race of giants once existed. That said, professional archaeologists don't typically spend their valuable time chasing things that don't exist outside of the murky realm of hoax videos and sensationalized reports.