Messenjah try to think critically for a minute....
Have you seen these 30 ft laong skeletons? Did Josephus claim to have seen them? Or is he just recording an anecdote he was told? Is it possible that this anecdote is a tall tale? Is it possible that Josephus made it up? Josephus was after all born Joseph ben Mattathias, a jew, could he not have made it up to save face for his race, the chosen race of God, being subjugated by a bunch of idolatrous heathens......
In short the stench of bovine excrement is pretty strong....
If you want us to account for 30 ft tall homo sapiens produce the remains, untill then why should we account for something that we think is fiction....
Or do you expect us to account for mermaids, unicorns etc as well