to find a slowly advancing glacier (those are the rarest types - most are receeding due to global warming) ON MY ROOF! What luck! This is about 12 inches of ice right up against my chimney, plus the top part of some long icicles that I enjoyed destroying. I just hope it doesn't come crashing into my living room. Outdoor glaciers are so much nicer.
Here is what Anchorage roofs (sans glaciers) look like: