Pui Pui Protection Forest, Protection forest in Province of Jauja, Peru

Pui Pui Protection Forest is a protected woodland in the Andean part of Junín Department, Peru, spread across seven districts at varying elevations. It contains rivers, steep ridges, and dense forest cover that shift noticeably as the terrain changes from valley floors to higher slopes.

Peru established this protected area in 1985 to safeguard water sources and the range of plants and animals living in the region. The designation came during a period when the country was beginning to formally protect its Andean zones.

The forest's name comes from the Pui Pui mountain range, where the Tulumayo, Huatzirok, Pichanaki and Ipoki rivers rise. Researchers Rodolfo Vásquez Martínez and Luis Valenzuela Gamarra described the endemic orchid Brachionidium puipuiensis from the forest's ecotone zone, and the tree Polylepis rodolfo-vasquezii also carries a researcher's name. The area forms part of the Bosques de Neblina-Selva Central Biosphere Reserve together with the Pampa Hermosa sanctuary.

Access to the forest requires advance registration and the company of a licensed local guide, so it is worth planning ahead before the visit. The terrain is demanding, so sturdy footwear and clothing suited to changing mountain weather are a good idea.

Three frog species found nowhere else on Earth were discovered here, and all three bear names tied to this location. This makes the forest one of the most biologically distinct places in the Peruvian Andes.