This rubber is one of the items designed in 2018 exclusively for the Gouffre de Padirac; it is based on its iconography and its discoverer, Edouard-Alfred Martel.

On 9 July 1889, Edouard-Alfred Martel went down into the Gouffre de Padirac, one of the most mysterious chasms ever explored; he soon wanted to share his discovery with as many people as possible. There followed several months of work leading up to 1 November 1898, the date on which the first visitors started their descent into the Gouffre de Padirac…
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Illustration: a pen-drawn portrait of Edouard-Alfred Martel
Dimensions: 3 x 5 cm