High Quality Content by WIKIPEDIA articles! Ciudad Perdida is the archaeological site of an ancient city in Sierra Nevada, Colombia. It is believed to have been founded about 800 A.D., some 650 years earlier than Machu Picchu. This location is also known as Buritaca and the Native Americans call it Teyuna.Ciudad Perdida was discovered in 1972, when a group of local treasure looters found a series of stone steps rising up the mountainside and followed them to an abandoned city which they named "Green Hell" or "Wide Set". When gold figurines and ceramic urns from this city began to appear in the local black market, authorities revealed the site in 1975.Members of local tribes the Arhuaco, the Koguis and the Asario have stated that they visited the site regularly before it was widely discovered, but had kept quiet about it. They call the city Teyuna and believe it was the heart of a network of villages inhabited by their forebears, the Tairona. Ciudad Perdida was probably the region's political and manufacturing center on the Buritaca River and may have housed 2,000 to 8,000 people. It was apparently abandoned during the Spanish conquest.