Machu Picchu transport of this obsidian type in pre-Hispanic Peru. Thousands of tourists walk the Inca Trail to visit Machu Picchu each year. They congregate at Cusco before starting on the one-, two-, four- or five-day journey on foot from kilometer 82 (or 77 or 85, four/five-day trip) or kilometer 104 (one/two-day trip) near the town of Ollantaytambo in the Urubamba valley, walking up through the Andes to the isolated city. Machu Picchu is both a cultural and natural UNESCO World Heritage Site. Since its discovery in 1911, growing numbers of tourists have visited the site each year, including 1,411,279 in 2017.
Lost City of the Kalahari Lost City of the Kalahari The Lost City of the Kalahari is a historical mystery of exploration and archaeology dating to the end of the 19th century. The history reports the existence of a ruined city found in the Kalahari Desert in southern Africa. In 1885, the Canadian Guillermo Farini (pseudonym of William Leonard Hunt) was one of the first westerners to cross the unexplored portion of the Kalahari. On his return to Europe, he published a book detailing his experiences which included descriptions of unusual rock formations which he believed to be ruins of hitherto unknown buildings. Farini subsequently