On 18 August 1890, Jean-Joseph Maquignaz died on the Bionnassay ridge of Mont Blanc whilst attempting to open a new route together with Antonio Castagneri and the young Count Umberto Scarampi di Villanova. Their bodies were never found.
On 18 August 1890, Jean-Joseph Maquignaz died on the Bionnassay ridge of Mont Blanc whilst attempting to open a new route together with Antonio Castagneri and the young Count Umberto Scarampi di Villanova. Their bodies were never found.