This week we’re featuring Nalle Hukkatavial taking on The Bügeleisen Sit Start (8c+, V15/16)—easily considered one of the most difficult boulder problems in the world. Nalle battles through poor weather conditions in Maltatal, Austria to make the ascent of one of the most aesthetic, difficult, and notorious bouldering projects ever.

It’s a proud, mean-looking wall when you first walk up to it. The rock is incredible, bullet granite … it turned out to be the biggest battle I’ve ever had with a climb, both mentally and physically.

– Nalle, via Rock and Ice