A lost city discovered deep in the Amazon rainforest could unlock the secrets of a legendary tribe. Little  is known about the Cloud People of Peru, an ancient, white-skinned  civilisation wiped out by disease and war in the 16th century. But  now archaeologists have uncovered a fortified citadel in a remote  mountainous area of Peru known for its isolated natural beauty.
 
 An ancient Chachapoyas village located close to the area where the lost city was found
It is thought this settlement may finally help historians unlock the secrets of the 'white warriors of the clouds'. The  tribe had white skin and blonde hair - features which intrigue  historians, as there is no known European ancestry in the region, where  most inhabitants are darker skinned. 
The citadel is tucked  away in one of the most far-flung areas of the Amazon. It sits at the  edge of a chasm which the tribe may have used as a lookout to spy on  enemies. 
 
 The area where the lost city was discovered by a team of archaeologists
 
 The Chachapoyas, also called the Warriors of the  Clouds, were an Andean people living in the cloud forests of the  Amazonian region of present-day Peru
The main encampment is made  up of circular stone houses overgrown by jungle over 12 acres, according  to archaeologist Benedict Goicochea Perez. Rock paintings cover  some of the fortifications and next to the dwellings are platforms  believed to have been used to grind seeds and plants for food and  medicine. The Cloud People once commanded a vast kingdom  stretching across the Andes to the fringes of Peru's northern Amazon  jungle, before it was conquered by the Incas. 
 
 A mummy of a baby from the Chachapoyas culture
Named  because they lived in rainforests filled with cloud-like mist, the  tribe later sided with the Spanish-colonialists to defeat the Incas. But they were killed by epidemics of European diseases, such as measles and smallpox.n Much  of their way of life, dating back to the ninth century, was also  destroyed by pillaging, leaving little for archaeologists to examine. 
Remains  have been found before but scientists have high hopes of the latest  find, made by an expedition to the Jamalca district in Peru's Utcubamba  province, about 500 miles north-east of the capital, Lima. Until recently, much of what was known about the lost civilisation was from Inca legends. Even the name they called themselves is unknown. The term Chachapoyas, or 'Cloud People', was given to them by the Incas. Their  culture is best known for the Kuellap fortress on the top of a mountain  in Utcubamba, which can only be compared in scale to the Incas' Machu  Picchu retreat, built hundreds of years later. Two years ago, archaeologists found an underground burial vault inside a cave with five mummies, two intact with skin and hair. 
Chachapoyas  chronicler Pedro Cieza de Leon wrote of the tribe: 'They are the  whitest and most handsome of all the people that I have seen, and their  wives were so beautiful that because of their gentleness, many of them  deserved to be the Incas' wives and to also be taken to the Sun Temple. 'The  women and their husbands always dressed in woollen clothes and in their  heads they wear their llautos [a woollen turban], which are a sign they  wear to be known everywhere.' 
 
  Secret civilisation: a map of the region where the settlement was found
The Chachapoyas' territory was located in the northern regions of the Andes in present-day Peru. It  encompassed the triangular region formed by the confluence of the  Maranon and Utcubamba rivers, in the zone of Bagua, up to the basin of  the Abiseo river. The Maranon's size and the mountainous terrain meant the region was relatively isolated. 
 
 

