In the Spanish Pyrenees, recent studies have shown important losses in extent and volume of the glaciers of the Maladeta massif during the period 1981-2005. These include a reduction in area of 35.7%, from to , a loss in total ice volume of and an increase in the mean altitude of the glacial termini of . For the Pyrenees as a whole 50-60% of the glaciated area has been lost since 1991. The Balaitus, Perdigurero and La Munia glaciers have disappeared in this period. Monte Perdido Glacier has shrunk from 90 hectares to 40 hectares.