Inca Trail to Machu Picchu terminus at the Sun Gate on Machu Picchu mountain. The two longer routes require an ascent to beyond above sea level, which can result in altitude sickness. Concern about overuse leading to erosion has led the Peruvian government to place a limit on the number of people who may hike this trail per season, and to sharply limit the companies that can provide guides. As a result, advance booking is mandatory. A maximum of 500 people are allowed on the trail each day, of which only 200 are trekkers, the rest being guides and porters. As a result, the high
Lost City of the Kalahari Clement had found a geological curiosity, dating back 180 million years to the great upheaval accompanying the birth of the Drakensberg Mountains in South Africa. The stones are composed of dolerite, a particular type of igneous rock which can erode to give the appearance of straight and regular blocks suggesting artificial construction. On 27 January 2016, the Travel Channel aired an episode of "Expedition Unknown" called "Kalahari Desert's Lost City", in which the host, Josh Gates, found man-made walls and rocks with art work in an area that matched Farini's description of the Lost City. Lost City of the Kalahari