Located in the Callejón de Huaylas on Río Santa at an elevation of 2,500 m, 450 km north of Lima, the country's capital. East of the small town are the mountain ridges of snow-covered Cordillera Blanca, with Huascarán, Peru's highest mountain, no more than 15 km east of Yungay.
Yungay is the capital of Yungay Province, occupies part of the Callejón de Huaylas, the Conchucos Valley (Yanama), the coast of Ancash (Quillo) and the Huascarán National Park.
The "Restoration" army, a Chilean-Peruvian army during the War of the Confederation, defeated the army of the Peru-Bolivian Confederation during the Battle of Yungay on January 20, 1839, marking the dissolution of the short-lived confederacy.
A remarkable event of the history of Peru happened in Yungay, where in the Guitarrero Cave US archeologist Thomas F. Lynch (Cornell University, USA, 1969) discovered very old cultural vestiges from circa 10,000 BCE, making this place "one of the great testimonies of the origin of agriculture in América".