“I was mountain biking up this horrible hill behind my house. It was a beautiful day – blue sky and pure sun. A thought popped into my head – ‘imagine riding a skatepark up in the air’.”

The carbon fibre skatepark was designed by Formula 1 engineers to be as light as possible, weighing 2.6 tonnes and taking 11 months to perfect.

Watch Kriss Kyle ride the world’s highest skatepark – from one of the world’s largest hot-air balloons.