The settlements of New Mexico's Chaco Canyon in American Southwest were notable for their massive stone buildings, known as great houses, containing hundreds of rooms and standing three or four stories high since the twelfth century A.D.

The article states that New Mexico's Chacos were either used for residential purposes or storage purposes or as a place for ceremonial gatherings. However, the professor casts a doubt on it and tells that there is no strong evidence for how these Chacos were used. First, the reading claims that the Chaco structures were used mainly for residential purposes and could accommodate hundreds of people. But the professor refutes this point by saying that though there were rooms for so many people there were fireplaces for only around 10 people. As a fireplace is needed to cook and survive, the theory of Chacos providing accommodation to so many people was rejected by the professor. Second, the article states that the Chacos could have been used as storehouses to stack the main crops of New Mexico, the maze. However, the professor says that though there were large rooms in the Chacos, that could have been used for storing the maze, this point in the reading lacks enough evidence because no trace of spilled maze or containers used for storing them were found there. Third, the reading claims that may be the Chacos were used for ceremonial gathering places as several broken pots that were used as utensils for cooking and serving in ceremonies were found there in the investigation. The professor opposes this point by explaining that this is a piece of insufficient evidence since the findings at Pueblo Alto contain not only pots but also building materials, unexpectedly. He further adds that these Chacos may have been a place for storing trashes and construction materials.
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