Switzerland and Italy have redrawn a border that traverses an Alpine peak as melting glaciers shift the historically defined frontier.
The two countries agreed to the modifications beneath the Matterhorn, one of the highest mountains in Europe, which straddles Switzerland’s Zermatt region and Italy’s Aosta valley.
Glaciers in Europe, the world’s fastest-warming continent, are retreating at an accelerated pace because of human-caused climate breakdown.
“Significant sections of the border are defined by the watershed or ridge lines of glaciers, firn or perpetual snow,” the Swiss government said in a statement cited by Bloomberg. “These formations are changing due to the melting of glaciers.”
The famed Zermatt ski resort is affected by the change, with the two countries agreeing to modify the border around the landmarks of Testa Grigia, Plateau Rosa, Rifugio Carrel and Gobba di Rollin based on their economic interests, Bloomberg reported.
A joint Italian-Swiss commission agreed to the changes in May 2023. Switzerland officially approved the treaty on Friday, but Italy still needs to sign.