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Felix Frey
Felix Frey is an expert in history at the Federal Office of Topography (swisstopo).
A moving mountain: the enigma of the Rosablanche
Felix Frey
29.08.2023
In 1915, land surveyors realised that the summit of the Rosablanche mountain in the canton of Valais had moved several metres in the space of just a few years. Today, the cause of the movement is more relevant than ever.
