Share this on WhatsApp In 2013, two mountaineers reached the top of Vulcán Llullaillaco, a 22,000-foot-tall volcano on the border of Chile and Argentina—when they saw something unexpected. Just 2000 feet below the summit, the climbers spotted a mouse scurrying across the snow. “It’s really a remarkable sighting because no one expected wild mammals to … Continue reading The World’s Highest-Dwelling Mammal Lives atop a Volcano