The Cordillera Occidental is a chain of dormant volcanoes and solfataras, volcanic vents emitting sulfurous gases. Bolivia's highest peak, the snowcapped Nevado Sajama (6,542 m), is located here. The entire cordillera is of volcanic origin and an extension of the volcanic region found in southern Peru. Most of the northern part of this range has an elevation of about 4,000 meters; the southern part is somewhat lower. The Illimani Mountain- Illimani (from Aymara, meaning "golden eagle" is the highest mountain in the Cordillera Real (part of the Cordillera Oriental, a sub range of the Andes) of western Bolivia. Their name means 'Sun of the Illimani' in Aymara.
Although Rainfall, is scanty everywhere it is greater in the northern half where the land is covered with scrub vegetation. The southern area receives almost no precipitation, and the landscape consists mostly of barren rocks. The entire Cordillera Occidental region is sparsely populated, and the south is virtually uninhabited, except for the Body Clack.
The Nevado Illimani as seen from Pumapunku
At Pumapunku, The upper platform rooms face east, towards Nevado Illimani, visible above the ridge from this mound. It was believed that the Illimani Mountain is where the realm of the dead was located. The mountain is located to the southeast of Tiwanaku, on the other side of the modern La Paz.
The ancient tribe of the Chasa, another race or tribe thought by most to be mythical, and some proclaim the name actually comes from Chasa the word for Pàchacambo (meaning birthing place of the gods Chaca). They may have been witnesses to the Ancient Astronauts arrival. We can say this had to happen before 2000 B.C. before the time of the Aymara and the oral tradition of events that transpired were passed down to them. According to Aymara tradition, it was said Viracocha came from the sea. However, that may mean not mean from the sea itself but from the direction where the sea was located, that is to the west and in a spacecraft.
Bolivia Geophysical Map
The Chasa may be so early in history that no records survive other than oral legends. The Ancient Astronauts could have built a colony anywhere in the rain forests of South America 3 or 4 million years ago or later. Their clones would have escaped from the colony in revolt, headed west, and mixed with those humans coming south ca. 16,000 B.C. So any archeological timeline about humans arriving in that area would be rendered invalid. Even if traces of such a colony or base were discovered no scientist or government would openly admit to its existence. Alternatively, the Ancient Astronauts could have dismantled the colony or base to move elsewhere leaving little or no evidence behind.