Located in the Pyrenees mountains, Pyrenees National Park protects many limestone landforms, including karst valleys and caves. Repeated glaciations within the Quaternary created multiple cirques such as the immense Cirque de Gavarnie and large U-shaped valleys within the park.[5] The limestone originated from the Cretaceous and Eocene periods. Tectonic uplift has created deep canyons, and, during the Quaternary, repeated glaciations carved cirques and large U-shaped valleys.[5]
The park was created in 1967 as a natural heritage site without barriers or fences where animals are totally free.[6] Devoted to preserving biodiversity and landscapes, as well as studying wildlife and plant species, the park is home to 70 different species of mammals.[7] Threatened species found in the park include the lammergeier, Pyrenean desman, Pyrenean chamois, and capercaillie.[8] A small population of bears also inhabit the park. At least 124 plant species have been observed within the national park, including 25 that are endemic to the Pyrenees mountains.[9]
^ ab"Pyrénées - Mont Perdu". UNESCO World Heritage Centre. United Nations Educational, Scientific, and Cultural Organization. Retrieved 24 October 2021.
^ abGarcía-Ruiz, José M.; Valero-Garcés, Blas L.; Beguería, Santiago; López-Moreno, Juan I.; Martí-Bono, Carlos; Serrano-Muela, Pilar; Sanjuan, Yasmina (2014). "The Ordesa and Monte Perdido National Park, Central Pyrenees". Landscapes and Landforms of Spain. World Geomorphological Landscapes: 165–172. doi:10.1007/978-94-017-8628-7_14. hdl:10261/108112. ISBN978-94-017-8627-0.
^Feuillet, Thierry; Sourp, Eric (September 2011). "Geomorphological Heritage of the Pyrenees National Park (France): Assessment, Clustering, and Promotion of Geomorphosites". Geoheritage. 3 (3): 151–162. doi:10.1007/s12371-010-0020-y. S2CID67817610.
^Gauthier, Perrine; Foulon, Yoann; Jupille, Olivier; Thompson, John D. (February 2013). "Quantifying habitat vulnerability to assess species priorities for conservation management". Biological Conservation. 158: 321–325. doi:10.1016/j.biocon.2012.08.012.
^"Pyrenees-Mont Perdu". United Nations Environment Program - World Conservation Monitoring Centre. January 2000. Archived from the original on 2008-07-18. Retrieved 2008-08-12.