This 41,269 ha reserve is about 8 hours upriver from the city of Juanjui in San Martin, and is home to some of the least-spoilt forests in the region. In previous visits we found a very healthy and dense population of the Critically Endangered and endemic San Martin titi monkey (Callicebus oenanthe). We also found tufted capuchin monkeys (sapajus macrocephalus ); black-headed night monkeys (Aotus nigriceps); red howler monkeys (Alouatta seniculus); tiny, beautiful pygmy marmosets (Cebuella pygmaea); Andean night monkeys (Aotus miconax); white bellied spider monkeys, (Ateles belzebuth), as well as a great abundance of tapirs, jaguars and deer.

The conservation of this area was initiated by the local association ‘Farmers for the Conservation of the Natural Forests of Simacache’. It is a small association of 10 members which has put a lot of time, money and effort into their dream to have this special area protected. NPC helped the association with the technical and legal aspects of the reserve creation, and are now supporting them in maintaining it. This very special area is not easy to protect because of its large size, remoteness and high levels of illegal activity around and inside it. 

The Simacache reserve was officially registered in December 2012 with the Regional Government of San Martin under resolution: 534-2012/GRSM/ARA/DEARN.