World Heritage

The Ordesa and Monte Perdido National Park ebelongs to the network of national parks and has been included in the world heritage list by the UNESCO, along with the French glaciers and the Parc National des Pyrenées.

This National Park is a first-rate geographical unit. The massif of Monte Perdido (3,355 m), the biggest calcareous massif of Western Europe, gives birth to the valleys of Añisclo and Escuaín, Ordesa, Pineta, crossed by their respective rivers Bellos, Yaga, Arazas and Cinca.

Landscape of contrasts: in the higher regions, the extreme aridity of the karst deserts, where rainwater and meltwater filter through cracks and holes. In the valleys, water is always present in the form of waterfalls, canyons, rivers... covered by lush vegetation.

The great diversity of landscapes and environments turns the area into an exceptional natural heritage site that must be protected and preserved for generations to come.

In general, the climate is typically Pyrenean, although the difference in altitude - from 750 m at the entrance of Añisclo, to 3,355 m on the Monte Perdido - and the orientation of the slopes of the two valleys, generate a huge climatic variety. Noteworthy are the large humidity and temperature variations that occur between day and night. These thermal inversions are reflected in the vegetation layering. Noteworthy is also the peculiar valley and mountain wind pattern.

From the month of May onward, the thaw on the high peaks of the Massif, together with the spring rains, reactivate the discharge of rivers and streams that remained icy throughout the winter.


The National Park of Ordesa and Monte Perdido receives annually, in the form of rain or snow, precipitation ranging between 900 and 2,000 mm per year. Ice reaches its maximum beauty in the protected areas: in the glaciers of the massif of the Monte Perdido and the Gruta Helada de Casteret (i.e., a limestone ice cave).

Interesting links:

Ordesa and Monte Perdido National Park-Ministry of Environment

National Parks Geographical Spanish Institute