In 1955, Mario De Riso filmed an excursion on the Mont Blanc glacier, on the Italian side. Roped up with Teresa and a companion, he crosses the vast glacial expanse using ropes and ice axes, capturing both the details of the terrain and the wide views of the Mont Blanc east face. The three proceed along the tracks carved in the snow, taking short breaks to adjust their equipment and playing with their shadows projected onto the blinding white of the snow. The glacier surface is shown both in close-up details and in wide views that emphasize the continuity of the white expanse. The three amuse themselves by filming their shadows projected on the snow, while De Riso traces the writing "M De Riso" on the glacier, leaving a sign of their passage.