Cirque: A bowl-shaped, steep-walled depression formed by glacial erosion in mountainous regions. Equilibrium Line Altitude (ELA): The altitude on a glacier where accumulation and ablation are in ...

For those intrigued by glaciers, exploring Colorado’s remaining glaciers, active or not, offers a chance to witness these magnificent formations firsthand. Places like Andrews Glacier and Arapahoe ...

image: A small cirque glacier feeds meltwater into Upper Greyling Lake in south-central Alaska. The former extent of the glacier can be reconstructed from the sharp-crested ridges of debris ...