After his triumph over the Chancas, Pachacutec decided to consolidate his kingdom and undertook battles against the rebellious curacas who did not come to his aid.

When he was gathering an army for war, news arrived that Inca Urco, Viracocha's co-regent, was to be found in Yucay with an army. Without delay, Pachacutec accompanied by his brother Inca Roca marched to Yucay to confront Urco. During the battle over the ravine of the Urubamba river, Inca Roca hit Urco in the throat with a shot from his sling with such force, he made him fall into the river. Urco, with his weapons in hand, was dragged by the current to the bluff called Chupellusca where his adversaries attacked and killed him.

Numerous were the curacas - the majority of them close to Cuzco - incorporated into the growing state during the first stage of the Inca buildup. The principal ones were from the Ayarmaca who remained definitively conquered and the Ollantay Tambo.

After his victory, Pachacutec ordered the construction of the palace and citadel of Pisac on a high promontory which showed this monarch not only conquered new dominions but was also fond of having new residences. However, the conquest which might be the most interesting in our times is the zone of Picchu where the Inca ordered built a palace for his return, with all his dependencies. With the passing centuries, this place would take the name Machu Picchu.

Thanks to the contribution of new archival manuscripts found by Luis Miguel Glave and Maria Isabel Remy and the subsequent research of John E. Rowe, we know that the whole region of Picchu, together with that of Ollantay Tambo were included in the private lands of the Inca.

Continuing with his military triumphs, Pachacutec accompanied by Inca Roca, took over Amaybamba in the La Convencion valley and in the central part of the valley he had a palace built for himself which he called Guaman Marca.

In the same document which tells this news it says that the following sovereign, Tupac Yupanqui, brought numerous mitimaes from Chachapoyas to populate the lower part of the valley with the obligation to plant coca fields.

In addition, the manuscript mentions the presence of another palace called Yanayacu in the high part of Amaybamba. When I was in that place the former landowner of a large farm told me that in that region there is talk about such ruins but that they still had not been found.

Having secured his power and assured his dominions near the capital, Pachacutec embarked upon conquests farther away. Thus he dominated the Soras and the Lucanas and brought their dual chiefs prisoners to celebrate his victory. Other lords, on seeing his growing power preferred to accept his "pleas" for reciprocity and not risk their lives in a dispute.

After resting for a time, the Inca once more reunited his armies and this time he decided to go against the lord of Collao. Thus he faced the feared lord of the Collao, Chuchi Capac of Hatun Colla whom he conquered after an arduous battle. With this triumph, the Cuzqueñans made themselves owners of the extensive lands of Chuchi Capac, which included jungle enclaves that produced the valued coca leaves and the lands situated on the coast where they obtained maize, hot peppers and salted fish. These were the first contacts with the coastal ethnic groups.