Ojo Guareña, situated in the north of the province of Burgos, is the second largest cave karst formation in the Iberian Peninsula, and one of the ten largest in the world.

This formation is of great speleological interest, as prehistoric shelters have been found here, as well as cave-dwelling invertebrates, including several previously unrecorded species. The formation is of great hydrological, morphological, scientific and even educational importance. It can be admired from various viewpoints including Alto Concha, Retuerta, Pico del Cuerno (on the hiking route). This area is also ideal for practising nature sports.

Ojo Guareña provides a concise insight into the evolution that has taken place from the Middle Palaeolithic Era until the present day; indeed, here visitors will find all the pieces they need to fit this complex jigsaw together. In addition to a wealth of flora and fauna it boasts a rich cultural heritage, bringing together countless attractions in a large natural space.


Category: Natural Monument (13,168 ha.)

Municipalities in the province of Burgos:
  • Espinosa de los Monteros,
  • Merindad de Montija,
  • Merindad de Sotoscueva

Visitor Centre

Park House 'Ojo Guareña'

At Casa del Parque you will find all the practical information you need to organize your visit to Ojo Guareña in the best possible way. Local and specialized monitors provide brochures, guides and personalized information.

In addition, visiting its rooms and seeing the audiovisual-which incorporates spectacular images of the interior of the caves- allows a better understanding of the surroundings of Ojo Guareña, which will allow a better experience of your visit.

There is also a planning of activities for all audiences such as environmental workshops, celebration of international days, guided tours, etc. that will allow you to get closer to the main scientific discoveries, as well as to know the flora, fauna and geology of Ojo Guareña.

In the Casa del Parque a small botanical path begins towards the Forest Nursery and recreational area that connects with the paths PR-BU-31 "El Valle" and with the Sotoscueva Path that in turn connect with points of interest such as the Hermitage of San Bernabé and Palomera Cave.

Address: Ctra. BU - 526. Quintanilla del Rebollar (Merindad de Sotoscueva). 09568 Burgos.

Telephone: 947 138 614

Email: cp.ojoguarena@patrimonionatural.org

Website: http://www.patrimonionatural.org/casas.php?id_casa=4

Show morePark House 'Ojo Guareña'

Enviromental Areas

Numerous birds of prey, vultures, egyptian vultures, wild boar, fox and wildcat. 53 species of invertebrates cavemen have been detected inside.
Limestone cut on the southern slopes of the Cordillera Cantábrica. The Guareña River enters this massif originating the karstic complex of Ojo Guareña.
Oaks, Quercus pyrenaica (quejigo), forests of beech and pine forests. Algae, fungi and bacteria are located in caves.