Imagine cycling down some of the world’s most dangerous, vertigo-inducing peaks - all on one wheel. That’s the daily reality for professional unicyclist, Lutz Eichholz, a pioneering athlete taking the quirky sport of one-wheeled mountain biking to the extreme. He has ridden down steep, rocky mountain sides on five continents. And the German-native says there is nothing more breathtaking than viewing the world from the seat of his unicycle.