take a look at the hight from where the picture is taken. The camera person must be what less say 5.6 to be conservative. That would make the top from where the camera is at least 6-7 feet then take in to account the angle of the ground, and the fact that
unless the photographer wasnt standing straight up which rairly they do when there taking a picture of a drop by the looks of the grass right in front of him it looks like hes crouching or laying so your logic is bad but his speed does make the drop bigge
Indeed it's a good 10 foot by the time you land. Talking to one of the blokes involved in Chicksands construction, a range of drops, including a larger one may be on the way in the not too distant future.