Gebroulaz glacier (GEB) is located in the Vanoise massif (France), between 2700 and 3400 m altitude. The glacier is one of the glaciers with longest records of glacier mass balance worldwide. Data series are continuous and cover few decades.This site is also characterized by the complete glaciological parameters performed annually to complete annual and seasonnal mass balance : ice velocity, ice thickness variation, snout position.In addition, meteorological observations complete the data base. GEB is a part of the French Glacier Observatory GLACIOCLIM/CRYOBS-CLIM.