"After 18 years of flying, I've seen pretty much about everything that I can see in that realm, and this was nothing close"
Researchers believe Qalatga Darband -roughly translated "castle of the mountain pass"- is on the route Alexander the Great took to attack Darius III in 331 BC
Huge tourist magnet!
More activity is expected
Bizzare footage circulates on Facebook
Unleash arrows and spears against outsiders