According to the International Civil Aviation Organization (ICAO), a runway is a "defined rectangular area on a land aerodrome prepared for the landing and takeoff of aircraft". Runways may be a man-made surface (often asphalt, concrete, or a mixture of both) or a natural surface (grass, dirt, gravel, ice, or salt).

https://en.wikipedia.org/wiki/Runway

Aviation Aircraft Plane De Havilland Runway Comet Airliner Jet

Just one of my slightly less straightforward DMT drawing ideas. Aya wanted to see more of this...

"There are all kinds of interesting questions that come from a knowledge of science, which only adds to the excitement and mystery and awe of a flower."
Richard Feynman
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