At first glance this mind bending video could be mistaken for special effects. But the incredible scenes - including walking a tight-rope and leaping between lollipops - are the result of a forced perspective optical illusion. Travel blogger Kristel Segeren and some friends created the inventive tricks at Salar de Uyuni, Bolivia. The area is known for its giant salt flat, the largest of its kind in the world. The endless plain white flats create the perfect canvas to produce forced perspective shots.