It's a fascinating place. I have been there.
We were able to go up in the cable car when we were there this year. As you know, you can still see the Roman "ramp" built up to the fortress, which took three years to construct. It's large, and one can see easily how a self-contained city could be sustained there. Water had to be brought up on the backs of donkeys.
What do you think about this author saying they don't know where the other 932 bodies are!! I cannot believe that...they would have to have counted the bodies hundreds and hundreds of years ago. Is this guy smoking weed?