Source: https://www.youtube.com/watch?v=9fJBrCs6VXM In this video a Flat Earther called "Dr. John" shares his observations of the coastline from the Southern English town of Worthing. He correctly identifies some landmarks along the way, but then it all goes wrong when he claims to be able to see the cliffs of Beachy Head, and then claim this "disproves the globe" A clue to what he is doing wrong is that the "Beachy head" looks like a little white dot, where as Seaford head looks like giant white cliffs. This is odd, because if the Earth was Flat, then Beachy Head would also look like giant white cliffs. He also does some calculations, showing that 92 meters of the cliff should be hidden behind the curve, and hence he concluded that he has disproved the globe. Bold claim, and wrong. Luckily he zoomed in enough on one shot that we can use this to fit the skyline to the actual view, and see what is going on. He's actually seeing the cliff that's behind the lighthouse! This cliff is 106m high, and a little further away, but the top 10 meters would be visible as white dot just like we see in Dr. John's video. So instead of disproving the globe, it looks very like Dr . John has actually proved it.