Valle Tranquilo Nature Reserve

  • Location: El Rosario, Baja California
  • Date of certification: October 24, 2013
  • Certification: Area Voluntarily Destined for Conservation
  • Area: 9,120.66 acres
  • Owner: Terra Peninsular

Valle Tranquilo Nature Reserve is a Natural Protected Area in Baja California certified by the Mexican Commission of Natural Protected Areas in the category of Area Voluntarily Destined for Conservation.

The reserve protects endemic flora and fauna species in its 9,120.66-acre extension and is located in Ejido Reforma Agraria Integral, between Sierra San Pedro Martir and Valle de los Cirios.

The reserve is part of the California Floristic Province, one of 35 biodiversity hotspots in the world and the area of the largest floristic biodiversity in the temperate zone of North America.

Also, it is located in the transition zone between the limits of the Mediterranean climate in the northwest of Baja California and the central desert of the peninsula, therefore, the convergence of species in both ecosystems generates a unique biological wealth.


In this space is protected an important portion of the maritime succulent scrub, being the only nature reserve in Baja California that protects this type of vegetation.

Likewise, 426 plant species and subspecies of plants have been identified, which represent more than the 75% of the total species in the region: 382 are native species, 57 are endemic and 3 are enlisted in the Mexican norm NOM-058-SEMARNAT-2010.

  • California juniper (Juniperus californica) *Subjected to special protection
  • Coast barrel cactus (Ferocactus viridescens) *Threatened species
  • Tecate cypress (Hesperocyparis forbesii) *Endangered species
  • Senita cactus (Lophocereus schottii)
  • Mammillaria brandegeei
  • Strawberry cactus (Mammillaria dioica angelensis)
  • Shaw’s agave (Agave shawii)

The most northern zone of species distribution, such as the Elephant cactus and Boojum tree, is located in the reserve.


There is a great diversity of bird species in the reserve, such as:

  • Red-tailed hawk (Buteo jamaicensis)
  • Swainson’s hawk (Buteo swainsoni)
  • Cooper’s hawk (Accipiter cooperii)
  • Peregrine falcon (Falco peregrinus)
  • Prairie falcon (Falco mexicanus)
  • Turkey vulture (Cathartes aura)


Rodent, squirrel and hare populations can be found in the reserve, and medium-sized mammals and puma trails have also been found.

  • Common grey fox (Urocyon cinereoargenteus peninsularis)
  • American badger (Taxidea taxus berlandieri)
  • Southern mule deer (Odocoileus hemionus fuliginatus)
  • Bobcat (Lynx rufus peninsularis)
  • Coyote (Canis latrans clepticus)

Things to do

  • Scientific research and monitoring
  • Photography
  • Hiking
  • Camping