I made a window out of ice (water and large cookie tray). and built it into the snow cave that is serving as the escape route from the science office in the greenhouse. This way the mouth of the cave is not open to the elements and does not fill with snow every few days and still lets light in.
After the last big storm my window finally got completely covered so I dug it out and built this igloo type shelter for the hole so it would not fill with snow and I'd have to dig it out again.
Here is the inside view. it's about eight feet deep. Took about 4 hours to dig out and build.
And this is what it looks like to launch a balloon in 30 knot wind!
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