Prehistoric indian artifacts dating
Chacoans quarried sandstone blocks and hauled timber from great distances, assembling fifteen major complexes that remained the largest buildings in North America until the 19th century.
Evidence of archaeoastronomy at Chaco has been proposed, with the "Sun Dagger" petroglyph at Fajada Butte a popular example.
The Navajo, who were not their descendants, called them by this term.
Reflecting historic traditions, the term was used to mean "ancient enemies".
"In a city like Mohenjo-daro, the excavators have said that the thick-walled houses could have taken an upper storey; there were several rooms and courtyards to a house, but whether each of these was the space for specific activities, we don’t know."The distinguished Indian archaeologist Shereen Ratnagar talks about the preconceptions and limitations of Indian archaeology, reflecting on "the kind of subtle points that don't always get taught in archaeology departments." Ancient Indus research is constrained by a shortage of funds.The current agreement, based on terminology defined by the Pecos Classification, suggests their emergence around the 12th century BC, during the archaeologically designated Early Basketmaker II Era.