I quite enjoy that YouTube channel. I watch any history content on YouTube with enormous fear and worry of crackpottery and "alternative history"-type charlatanry, and I feel like this one hasn't let me down yet, though I'll probably never feel at ease watching it given the subject matter.

I really appreciate his nuanced stance that even cranks and kooks are capable of observation and recording what they see. And his obsession with correlating details through original historical accounts. And the work he's doing mapping the individual blocks of the casings and throughout the passages. It's one of the channels that convinced me that Youtube was a legitimate path for getting your scientific research funded.