The Dunantspitze , formerly called Ostspitze , is a peak of the Monte Rosa Massif in the Pennine Alps in Switzerland. It is the second highest peak of the massif, after the Dufourspitze and the second highest summit in Switzerland, but its prominence is only about 15 metres. At the time of its first ascent it was unclear which of the summits was the higher.
Dunantspitze and Dufourspitze were originally just the eastern and western summits of the Gornerhorn. Westspitze was renamed Dufourspitze in 1863 in honour of Guillaume-Henri Dufour, while Ostspitze retained its name until October 2014. It was then renamed Dunantspitze in honour of Henry Dunant, the Swiss founder of the International Committee of the Red Cross in 1863.
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