I like America Unearthed, its host Scott Wolter seems blissfully unaware of any work done on some of the artifacts. Most recently I watched the episode about those lead crosses in the caliche’, which were examined in the 1970s by Barry Fell. Fell’s conclusion (it’s around here somewhere, in a written reply he very kindly sent) was that the “Latin” (he also put it in quotes) was made up of snippets of the Latin mottos (including the abbreviations) of various noble families of Europe, and translated into gibberish. Clearly they are some kookiness, even if not a hoax.
I saw Wolter on a show that predated his AU show. He was asked to use his geological knowledge and he did a good job without all the mumbo jumbo. Once they gave him his own show, he saw dollar signs and jumped multiple sharks.