A creak, a thunderous roar, and then the plunge: Argentina’s Perito Moreno Glacier calves several times a day, as hundreds of visitors strain to see which side it will break off and capture the moment on their screens.
The event, known as calving, is a normal occurrence, said Victoria Pacheco, a tour guide in El Calafate, in Argentina’s Patagonia region, during a hike three days before the inaugural World Glacier Day on Friday. Declared by the U.N. General Assembly in 2022, the March 21 celebration aims to promote the conservation of glaciers, a crucial source of drinking water.
