"Lake Titicaca, straddling the border between Peru and Bolivia in the Andes Mountains, is one of South America's largest lakes and the world’s highest navigable body of water. Said to be the birthplace of the Incas, it’s home to numerous ruins. Its waters are famously still and brightly reflective. Around it is Titicaca National Reserve, sheltering rare aquatic wildlife such as giant frogs." The short hop cruise on lake Titikaka takes you to the 9km2 and 3,663 Quechua speakers small island of Amamantí. Also called the high-altitude oasis being at 4000m. Time seems eternal on this island. Getting off the boat it is a steep climb up with cobblestone walkways to the Pachatata Ceremonial Center. The views reminisce of the Meditiratian coast in Spain or Italy. The ten communities that live in Amantaní are still doing agriculture, livestock, and fishing. And it must be bloody tough work at 4000m altitude while walking up and down the steep sides every day. Gatekeep at Pachatata Ceremonial Center. It is ruins that are at the top of the island. When it is about to rain in Amantaní, its inhabitants run to take refuge in their homes. The difference is that, on an island 4,000 meters above sea level, thunder-laden clouds are not a distant threat in the sky but one at eye level. And it can get pretty serious quickly.