Patagonia’s ice fields are difficult to access and still largely unknown to climate researchers. Extreme mountaineer and ice climber Robert Jasper lives in the southern Black Forest. Together with his colleague Jörn Heller from Freiburg he has ventured into barely explored areas in order to collect important data and samples for further research on behalf of climate expert Tobias Sauter. As a result of climate change, glaciers are irretrievably shrinking in the Patagonian Andes, a mountain range that extends beyond the borders with Chile and Argentina.