Aliens or ancient humans; thats all the possibilities they have? No Seekrit Nazi bases? Knights Templar's hidden fortress with all their treasure? Entrance to t

Aliens or ancient humans; thats all the possibilities they have? No Seekrit Nazi bases? Knights Templar's hidden fortress with all their treasure? Entrance to the dinosaur infested inner planet? ... or possibly a known, documented outpost? Nah. Ancient Nazi dinosaur fortress!