It was not a bad view from this vantage point. The team called from up on the glacier at 7 AM to report overcast skies and a fog layer moving down valley. We waited for an hour and things seemed to be improving. By the time I arrived overhead the light had begun to get flat again. Flat light means little or no shadows and on a white surface with hidden crevasses this can be a problem. I circled several times hoping the sun would illuminate the surface to ease the stress of the unknown. I had very little extra fuel so I knew I had to make a decision pretty quick. After several circles I decided the conditions were reasonable enough for landing. The team had marked the runway with black markers so that I could determine where the ground was even though I could not judge texture. It would have been a smooth landing if I could have seen the snow drift and avoided it, but I smacked it pretty hard. So I logged two glacier landings rather than one :o) I was glad the light was not any flatter. As I was unloading the groceries the sun illuminated the snow for 5 minutes and it was a good reminder not to get in a hurry.