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Matteo, son of a farmer, watches his herd of cows climbing the narrow trail from Adelboden to the high plateau at Engstligenalp for their summer stay, in Adelboden, Switzerland, Saturday, June 24, 2017. Accompanied by experienced cowherds, around 400 cattle master the 600m altitude difference in a little over one hour. (KEYSTONE/Peter Klaunzer)