In the media

Article on the UIAA website about the Clean Climber event on 9/3/2019. Here is the link.

Clean Climber in Germany PDF.pdf
Clean Climbers in Ettringen PDF 3.0.pdf

Article by Katharina Spitzley in the Rheinzeitung after the Clean Climber event on 9/3/2019.

Article in the magazine of the Dutch climbing federation NKBV in 2018.