Logo for LowestHighest, showing the three teammates, including André Kajlich, who are attempting to summit Aconcagua.

Wheelchair users have done some crazy things over the years — think Rick Hansen’s round-the-world push or Mark Wellman’s climb of El Cap — but an expedition currently underway is likely to wind up near the top of the list. André Kajlich, who uses a manual wheelchair due to double above-the-knee amputations, has partnered with two other disabled adventurers to trek from the lowest point to the highest summit on every continent.

First up on the expedition, which they’re calling Lowest Highest, is South America.