Tools:
Garcilaso de la Vega is the only chronicler who says something about the tools Incas used to carve the stones. He mentions a kind of iron called hihuana.
“Los canteros no tuvieron más instrumentos para labrar las piedras que unos guijarros negros que llamaban hihuana, con que las labran machucando más que no cortando”.
Furthermore, archaeologists have found around the quarries tools such as
hammers made of stone, metal bars, chisels and plumbs made of metal and stone:
How the Walls were Built:
In order to put a stone on another, the Incas built slants and then pulled rocks using ropes and logs. This is according to
Bernabé Cobo and
Cieza de León.
However, the best explanation I found comes from
Gutiérrez de Santa Clara in his book
Historia de las Guerras Civiles del Perú (
1590) in which states soil was put until the level of the wall and then stones were pulled:
“…cuando estos indios labraban edificios soberbios, para poner una piedra grande sobre otra labrábanla primero, i antes de subir la piedra ponían primero mucha tierra al pie de la primera piedra asentándola hasta que emparejaba con ella. I luego ponían unos morrillos largos i gordos de pino sobre la tierra pisada i por allí subían la otra a fuerza de brazos. I de esta manera, estando arriba, la encajaban muy bien en la otra de abajo…i después quitaban las vigas i toda la tierra”
[...]
Garcilaso de la Vega says Sacsayhuaman was built by Inka Yupanki around 1400 AD.
Juan de Betanzos has the same opinion. In his book
“Suma y Narración de los Incas“, he mentions Topa Ynga Yupangue as well as the name of the mountain where the site was and the quarry where the rocks were carried from.
“…salió Topa Ynga Yupangue…y parescióle que era bien que se edificase en un cerro que se dice Xacxahuaman Urco y luego por él fue hecha la traza…”
“…mandó el Ynga que acarreasen los cimientos della y acarreasen de todas las canteras de Oma y Salu y de Guairanga pueblos entorno desta ciudad el más lejano a cinco leguas…”
Even though he says the site was completed in six years, he does not mention when it was started.
Six years seem to be a short time for a site like Sacsayhuaman to be completed.
Some scholars claim Sacsayhuaman was not completed when Spanish arrived here.
This could be true because
Pedro Cieza de Leon says “this fortress had been begun in the days of Pachacuti; his son Topa Inca and Huayna Capac and Huascar added greatly to it”.
http://peruenroute.w...aso-de-la-vega/