Some SEM Micrographs of Aged Snow

These snow crystals had been sitting in the freezer for over a year, so they had had plenty of time to metamorphose. All of their edges are rounded, and there are dimples where I am guessing the ice sublimated away. You can see where different crystals sintered together where they were in contact.

But the coolest part to me is that you can see grain boundaries! I wasn't sure if you could do that with SEM.







Aren't these cool? Get it? Cool? Haha.