Evolution of Ossoue Glacier (French Pyrenees) since the end of the. Little Ice Age. R. Marti1,2, allowed the reconstruction of 1260 2005 summer tempera- tures in the Volume changes derived differenti- ating DEMs is The Pyrenees is an interzonal mountain system (orobiome), in effect a "transition area" between Central and Mediterranean Europe. There remains a high degree of naturalness over large areas. PYR