Sylvain Tesson is the author of Les Fées (Ed. des Équateurs) The adventure writer gave a climbing lesson to Thibaut Gauthier.

“I’m going to show you something that’s relatively little known,” he says, taking us in the middle of the night to one of his childhood memories. ‘Thirty-five years ago I had a guide called ‘the climbing sites of France’ (...) Here on the quays of la Tournelle, which is one of the most beautiful places in Paris, there was this identified base which was authorized. There are holds.’