Glaciar Perito Moreno was once considered a rarity: one of Patagonia’s only stable glaciers. But scientists have found the glacier is now in sudden and probably irreversible retreat – and this collapse is a warning for the world’s remaining ice.
Perito Moreno is unusually accessible for such a large and spectacular glacier, with nearly 700,000 visitors a year. Fed by abundant snowfall high up in the Andes, the glacier descends through beech forest to end in Lago Argentino. From here, tourists can get up close and personal on a specially constructed observation deck to watch as icebergs break off the front of the glacier, a process called iceberg calving. Icebergs regularly crack off the ice front and tumble into the turquoise lake below. But now, it’s on the verge of disappearing.
