Chaco Canyon is a remote and arid region in northwestern New Mexico that is home to some of the most impressive ancient ruins in North America. The Chacoans, who lived in the canyon from about AD 850 to 1250, built large stone pueblos, kivas, and other structures that are still standing today.
One of the most puzzling aspects of Chaco Canyon is how the Chacoans were able to transport massive logs from the surrounding mountains to their building sites. The logs, which were often as long as 40 feet and weighed several tons, were used to construct the roofs and floors of the pueblos.
For years, archaeologists have debated how the Chacoans were able to move these logs without the use of wheels or draft animals. Some have suggested that they used ropes and pulleys, while others have proposed that they used sledges or rollers.
However, a new study by a team of scientists from the University of California, Berkeley, suggests that the Chacoans may have used a much simpler method: they simply carried the logs on their heads.
The scientists tested this hypothesis by hauling logs of different sizes and weights up a steep slope to a simulated building site. They found that a team of four people could carry a 40-foot log weighing 2,000 pounds up the slope in about an hour.
The scientists also found that the logs were more stable and easier to carry when they were carried on the head, rather than on the shoulders or back. This is because the head provides a natural pivot point that allows the log to be shifted and balanced as needed.
The study's findings suggest that the Chacoans may have used a combination of methods to transport logs, including carrying them on their heads, using ropes and pulleys, and using sledges or rollers. However, the evidence suggests that carrying logs on their heads was likely the most efficient and practical method.
This discovery provides a new insight into the ingenuity and resourcefulness of the Chacoans. It also helps us to better understand how they were able to build such impressive structures in such a remote and challenging environment.
