Penitentes' labyrinth
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Penitentes' labyrinth

by Sebastian Vivero, Department of Geosciences, University of Fribourg, Fribourg, Switzerland

The Penitentes of Tapado Glacier, Dry Andes of Chile. On low-latitude glaciers and snowfields, penitentes are spear-like shapes made of snow or ice, ranging in size from centimeters to meters. Their name came from the similitude of a field of religious orders doing penance during Spanish Holy Week (Penitentes).