@lionel_trolling If you're ever in England the Tank Museum is definitely worth a visit. Also you'd probably get a kick out of this great tour of the last US diesel submarine, the tour guide is fantastic https://t.co/7OmGJGY5Pv
Right here at Puma Punku, I'm looking at a block of granite with corners so precise and a surface so completely flat and smooth that there is simply no hand tool explanation for how this was done. What really stops me in my tracks are these drill holes...