| » » » Long-term 10-year running average of precipitation based on Quelccaya… |
| Photo 6 of 17 | | | |
|
| Long-term 10-year running average of precipitation based on Quelccaya Ice Cap Cores by Byrd Polar Reasearch Center at Ohio State University. Machu Picchu primary occupation period is shown from 1450 to 1540 AD. |
| Photo 6 of 17 | | | |
|
|
