Well if you live in the North East USA, you've just had your first big dumping of snow this season.
My girlfriend (who I constantly ramble on to about my music / audio) started musing this afternoon on her way home from work about how snow might be a good bass trap since the heavy snow we've had here today is really densely packed. It must have decent absorption properties since it always dampens the general environmental sound when snow is everywhere.
And thinking about it, anyone who's every built themselves an igloo as a kid (or maybe you live in one

) will know that inside igloo's always have that dead sound.
So.. this is obviously hypothetical.. if I built a snow-studio every year, would I need bass-trapping? And how good do you reckon good densely-packed snow is anyway? (There's plenty of mass in it as I nearly killed myself digging my car out 10 mins ago)