I turned directly into the glacier for my final approach to land and was surprised see how quickly the clouds were forming on the ground behind me. I continued my approach to landing and hopped out of the plane to assess the changing weather. When I looked back towards the forming clouds I was amazed to see that they were almost gone. I then realized it had not been a forming cloud bank, but the explosion of a massive avalanche that had fallen from the cliffs pictured above. The avalanche cloud I had seen was more than a mile long and several hundred feet thick. I had never seen an avalanche of that magnitude. I would like to have gotten a picture of it but I was too slow. Even without the avalanche it is an impressive picture. This photo was taken only 20 minutes from my house.