[2] The Battle of Junín, which was fought on 6 August 1824, is regarded as one of the definite episodes in the Peruvian War of Independence, which helped to bring to an end the Spanish rule in Peru and the Americas.

[1][3] This historic landmark is located at 4105 m of elevation in a high andean plain known as Pampa de Junín.

Native plant species found at the site include: Festuca dolychophylla, Jarava ichu, Calamagrostris vicunarum, Carex ecuadorica, Alchemilla pinnata, Trichophorum rigidum, Astragalus garbancillo, Distichia muscoides, Plantago rigida, Werneria nubigena, Hypochaeris taraxacoides, Erythranthe glabrata, Gentiana sedifolia, Luzula peruviana, Acaulimalva crenata, Hordeum muticum, Aciachne pulvinata, Azorella diapensioides, Solanum acaule, etc.

[2] Among the mammals reported in the area are: the vicuña, Molina's hog-nosed skunk, the Andean fox, and the montane guinea pig.

[1] There are also archeological sites inside the sanctuary, like the colcas, which were Inca warehouses that once stored food and other goods.