Spirit of St Louis

Clouds at 8,500 feet over the Great Glen!
Fractalian image inspired by visit to the Aeronautics and Space Museum in Washington D.C. some years ago. I am 100% confident I would never fly a plane in which I needed a periscope to see out of its cramped cockpit! Its huge fuel tank was in front of the pilot, which meant he could not see forwards at all, without the periscope...