One of the greatest elements to effect human evolution and progress is climate and environmental geography. The opening image of these ancient ruins surrounded by a now arid environment ( Sechura Desert ), it makes one wonder if it may have been more hospitable when it was built. On the other-hand these ruins lay just outside the modern day city of Lima, which is considered the world’s third largest desert city, and so this area must have maintained a level of abundance that provided for the people that existed in this area after these ruins disappeared under the desert. If so then what gave rise to the population that built its walls and then their disuse six hundred years later? What climatic impacts supported and then undermined their use?