Glacier
Emotional tension, repression, and frozen feelings. Probably repressed feelings over a long period of time. Or perhaps fear of living or expressing your feelings or emotions, so a frozen chunk of past experience. It might at times point to a difficult period of your life when you were living in a cold and hostile atmosphere or environment.
Large amount of frozen areas of life experience, or feelings seemingly impossible to move on from. Or a feeling of awe about the hugeness of natures creations and the timeless aspect of it. Also the possibility of finding things from the long past uncovered.
Useful questions and hints:
What am I doing in relationship with the glacier?
Was I aware of any feelings while with the glacier?
What was my experience of the glacier?
See Summing Up – Techniques for Exploring your Dreams – Characters and People in Dreams