This week's Friday Night Video takes us to Isenfluh, Switzerland, where Adam Ondra is attempting a project originally bolted by Stephan Siegrist.

Ondra had previously attempted the project with Jakob Schubert but the pair broke a crucial crimp and resolved to come back another day after realising they had no knee pads.

The film shows the detailed process and many variables that Ondra works through to make first ascents.