Racers follow the stream -- jumping off small cliffs and through waterfalls -- and a final rock face at the base creates one of the last challenges, requiring concentration and crab-walking to climb down.
Beckham is one of the world's most recognisable names, both for his sporting prowess and numerous off-pitch endorsement deals, and his pulling power could provide a valuable income stream for PSG -- which must conform to European football's financial fair play rules that restrict over-spending by club owners.