Immediately on seeing the Spaniards, Quizquiz withdrew to some distance with all the women and people who were unfit for battle, and placed his troops in a post of very difficult access under the command of Huaypalca, a brother of the late inca Atahualpa. Almagro advanced without hesitation to attack them, although the horses were so weary that they were hardly able to move though led mostly by the soldiers; besides which the Peruvians rolled down upon them from the mountain great quantities of large stones and fragments of rock. In spite of every obstacle, the Spaniards made their way to the post occupied by Huaypalca, which they attacked both in front and flank, and forced him to retire among the steep rocks, where he defended himself till night, and then drew off under cover of the darkness to rejoin Quizquiz. Sometime afterwards, it was learnt that the detached party of Peruvians which marched on the left of Quizquiz, had made prisoners of fourteen Spaniards, all of whom they put to death. Almagro, in continuing his march, was opposed by the Peruvian rear-guard at the passage of a river, so that he was unable to get over for a whole day. Besides occupying the opposite bank of the river, the Peruvians had taken possession of a very high mountain immediately above the place occupied by the Spaniards, so that they were unable to attack the enemy without exposing themselves to great danger; and indeed a good many of the Spaniards were wounded, among whom Alfonso de Alvarado was pierced quite through the thigh by a javelin, and another officer of rank was severely wounded. The Peruvians kept firm all night, but in the morning they abandoned their post on the banks of the river, leaving the passage free for the Spaniards. The Indians had burnt all the baggage which they could not carry off, but above 15,000 Peruvian sheep were found in their camp, and more than four thousand Indian men and women, of those whom Quizquiz had made prisoners, who now voluntarily surrendered themselves to the Spaniards. The Peruvian warriors had retired to a strong post on the top of a mountain, where Almagro did not think fit to attack them, as he was desirous to continue his march to the south.
On their arrival at San Miguel, Almagro sent the Captain Diego de Mora to Puerto Viejo, to take the charge of the vessels belonging to Alvarado, who likewise sent Garcias de Holguin on his part, that this measure might be executed amicably according to agreement. After giving all the necessary orders at San Miguel, and having provided his own men and those of Alvarado with arms, money, and clothes, he and Alvarado continued their journey towards Pachacamac. In the course of this march, he left Captain Martin Astete to build and settle a town now called Truxillo, in a convenient situation on the coast, in pursuance of orders to that effect from the governor Don Francisco Pizarro.