Battle of Ollantaytambo

The Battle of Ollantaytambo (Spanish: Batalla de Ollantaytambo, ) took place in January 1537, between the forces of Inca emperor Manco Inca and a Spanish expedition led by Hernando Pizarro during the Spanish conquest of Peru. A former ally of the Spaniards, Manco Inca rebelled in May 1536, and besieged a Spanish garrison in the city of Cusco. To end the stand-off, the besieged mounted a raid against the emperor's headquarters in the town of Ollantaytambo. The expedition, commanded by Hernando Pizarro, included 100 Spaniards and some 30,000 Indian auxiliaries against an Inca army more than 30,000 strong.

There is some controversy over the actual location of the battle; according to John Hemming it took place in the town itself, while Jean-Pierre Protzen argues that the nearby plain of Mascabamba better matches the descriptions of the encounter. In any case, the Inca army managed to hold the Spanish forces from a set of high terraces and flood their position to hinder their cavalry. Severely pressed and unable to advance, the Spaniards withdrew by night to Cusco. Despite this victory, the arrival of Spanish reinforcements to Cusco forced Manco Inca to abandon Ollantaytambo and seek refuge in the heavily forested region of Vilcabamba where an independent Inca state survived until 1572.