This page discusses glaciers as moving ice masses formed from snow, shaping landscapes through abrasion and acting as critical freshwater reservoirs. Their health is measured by mass balance and movem...This page discusses glaciers as moving ice masses formed from snow, shaping landscapes through abrasion and acting as critical freshwater reservoirs. Their health is measured by mass balance and movement patterns, with significant retreat noted since the Little Ice Age. Erosion creates various geological features, while meltwater contributes to landform development.