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, archaeologists headed by the director of the Instituto Colombiano de Antropología reached the site in 1976 and completed reconstruction between 1976–1982.[1][3]