Climate change is accelerating the retreat of Alpine glaciers, significantly impacting water resources in mountain valleys. This thesis analyses the retreat of the Adamello Glacier over recent decades using satellite imagery and GIS techniques to map glacier perimeter variations and correlate these changes to climate variables, focusing on Valcamonica, the valley located beneath the glacier. The objective is to understand how the glacier surface area has been changing during the years and how its reduction is influenced by precipitation and temperature trends. The study is based on satellite data from MODIS and Sentinel-2 to provide a detailed assessment of glacier variations from 2000s to the present.