Wolfgang Pauli is seen here with his former teacher Arnold Sommerfeld attending a conference on the electron theory of metals in Geneva, 15–18 October 1934. The conference proceedings don’t mention any leisure activities, but these included a cable car trip up the nearby Salève mountain to enjoy views of Geneva town, the lake and the Alps. The Salève is in France and Sommerfeld had no French visa, so conference organiser Jean Weiglé obligingly smuggled him up to join the others in his car.