Cáceres District, Nepeña Valley, Peru—Nestled within a basin and surrounded on three sides by ridges of the Cordillera Negra Mountains of north-central Peru, the tiny village of Cosma stands out with rows of pastel colored, closely-packed buildings—teal, yellow, white, lime-green, red—an assortment of colors that many in the U.S. might associate with a beach town. […]