They are both places of worship whose nature still be could not decrypt, but which highlights the predilection of the incas by stone and the care you took in your carving.
Location (3580 m)
4 And 6 kms. (5 min. to the northeast of Cusco) paved road are the archaeological sites of Quenko. There are two places: the Grande, which is located at the foot of the road that goes from Sacsayhuaman to Pisac; and the boy, which is 350 metres to the West of this, on the hillside. This shrine is located on what is now known as the Hill relief and covers an area exceeding 3,500 square meters.
During the Inca Empire, this place was a temple for public ceremonies. It's a huge semicircular area of 55 meters in length with 19 niches incomplete distributed along the wall. Some publications stated that the niches were arranged around the amphitheatre seats for entities to be worshipped to them as, but according to recent research, it is very likely that they were in fact the foundations of a large wall. In front of the free area is a large block of stone 6 meters of height that rests on a sturdy rectangular stand. It is possible that it has been a gigantic sculpture that have had a Zoomorphic models. The lack of accuracy, due to traces of the destruction caused by the idolatries of idolatry (responsible people remove themselves from the local cult icons) during the colonial period. It has also a ledge rock decorated with a passage that leads to an underground room, a complex of terraces, bedrooms and a system of drainage channels aimed at draining water from the place.
The carved stone
Behind the stone rises a rocky promontory where a staircase carved into the Rock leads to the Summit. There was born the small channel in zigzag which, from one lower hole descends then to branch a branch that follows the slope and another that arrives at the underground Chamber inside the mountain.
It may have served to drive the ofrendada chicha or blood of the flames of some not yet clarified ritual sacrifices. At the same Summit carved traces remain of what could be a condor, whose head was broken, as well as that of a puma. Remains of a room can also be noted.
Intihuatana and Astronomical Observatory
On the living rock raided and polished protrude two cylinders of short height. It is likely that it has been an intihuatana, which translates as "place where is tied to the Sun", i.e. allows to calculate the position of the Sun. It is not known how this device worked. It is an enigma to the present day. But it is presumed that it was a kind of Observatory used to measure time, to establish stations, determine the solstices and equinoxes, and as shrine is worshipped the Sun, the Moon, Venus and the stars.
It is a quechua name that means "temple or place that has monkeys". It is located 500 meters directly East of Quenco Grande. It has a carved stone of nearly two meters high, which some believe to see the shape of a toad. They are still visible in that rock reliefs of snakes and monkeys that could have given name to the place.
The underground Chamber
The rock carving done here is quite a feat. Floors, ceilings, walls, tables and niches, were carefully carved in the rock. Undoubtedly, it was a place of worship for hidden and secret rites. The builders of the site completed its composition with service at the perimeter rooms. It also has platforms and channels for the evacuation of rainwater.
The zigzagging gutter
It is located very close to the intihuatana. Cusquenian historian Victor Angeles describes it in the following way: "part of a small hole, scrolls inclined plane and broken line, then it splits, one of the branches was driving the fluid to circulate to the underground Chamber or room of sacrifices". The liquid could be the blood of sacrificed humans (animal or human) to the gods.
The mortuary room
The mystery of the Andean cult is one of the attractions of the inca culture. On the so-called "room of the sacrifices", the questions still unresolved. It's an underground Chamber, fully carved on a huge rock. In the lower portion of the large mountain carvings are floor, ceiling, walls, tables, cupboards and vain. It is said that this underground Chamber could have been used to embalm Dried apricots, but it is also possible that there have been conducted human and animal sacrifices.
The boy Quenco, rather more destroyed than Quenco Grande site, shows remains of high walls, circular planning and the same careful carving of rock
original source: cusco_peru.org