Altitude axis would be good to see also… Google 9 years ago Altitude axis would be good to see also… https://www.theguardian.com/travel/video/2016/oct/25/layers-of-london-air-traffic-build-up-over-24-hours-video-animation?CMP=share_btn_gp Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook