Free Online HD on Lookmovie. Alle 4000er der Alpen is a documentary about alpinism that takes place in the Bernina Range and the Bernese Alps. It was directed by Samuel Gyger in 2015 and produced by Samcam Film. It is a part of the series Sommer Challenge. It features Ueli Steck, Michael Wohlleben, Andreas Steindl and Daniel Mader.