soldiers walking on the Temple Mount . . . with blood running up to their knees.
I’ve heard stories about them walking in the streets of the city with blood up to their knees (which is still quite ridiculous), but on the Temple Mount it would be downright impossible. It’s a freakin’ MOUNT... so any large amount of liquid would run off. How in the heck did this bumpkin become a Rhodes scholar?
The account of knee-deep blood is first-hand from Raymond of Aguilers, an eyewitness and enthusiastic participant.
A translation of his account is at
http://www.fordham.edu/halsall/source/raymond-cde.html#jerusalem2
You don't know your geography. Herod encased and surrounded the Temple Mount with large retaining walls. The end result is that, geographically, the Temple Mount is like a large fishbowl. There's no place for liquid to run off to.