Even in its warmest months, Antarctica is an extreme environment, one of the driest, the windiest and the coldest on the planet. It's this very reason that Antarctica is both the least-explored continent on Earth, but also has a history of attracting some of the most extreme adventurers.
Take 35-year-old British adventurer Maria Leijerstam, who aims to be the first person in history to bike to the South Pole. Leijerstam will make a 400-mile journey over 20 days in a custom-built, three-wheeled tricycle.
While biking across Antarctica is certainly an unprecedented challenge, getting around in the most hostile environment on Earth is difficult no matter how you choose to do it.