[Byron]

Well,believe it or not Malton, that is a ramp which Red Bull will provide for you if you are organising an event. It is not dissimilar to ski jumps used by water skiiers but taller and is in fact for windsurfers to give them some height for their trick somersaults etc. before landing.
(if you can enlarge the pic you will see the jumper holding his sail bar and he would seem to be in the last stage of a high turn)