Stock Photo - 09 November 2021, Bolivia, Copacabana: Matthieu Witvoet (l-r), who defines himself as an ""eco-adventurer"", Theo Curin, Paralympic swimmer, and Malia Metella, French athlete, smile before the start of a swim on Lake Tititcaca. The group has set itself the goal of swimming 122 kilometres across the lake, which sits at 3812 metres above sea level - a challenge that could take ""between eight and 10 days"". ""The desire to surpass myself, to achieve an even crazier dream; to show that anything is possible through mental strength - regardless of physical limitation... that's the message I want to convey,"" Courin said. Photo: Radoslaw Czajkowski/dpa. - Copacabana/Bolivia