Doesn't look like a very good factory site, but I guess using impervious rocks and the built-in slope on the hill was practical.
The Assyrian kings of that era had a favorite phrase for their commemorative self-aggrandizing battle scenes — “I burned with fire”. ;^) Now, imagine the same kings a little hungover and thirsty. Heh... “just build it here, no, I don’t care how screwy the site is. It’ll be both our asses otherwise!”