A sheep walks inside a pen during the Andean traditional celebration for 'Martes de Challa' as part of the Carnival festivities on February 16, 2021 in Pizacaviña, La Paz, Bolivia. “Martes de Challa” (Ch'alla Tuesday) is one of the most important traditions in Bolivia to thank the Pachamama (Mother Earth) celebrated on the last day of Carnival. (Photo by Gaston Brito Miserocchi/Getty Images)
