The reason snow is able to absorb sound is because it is porous. Snowflakes are six-sided crystals, and they are filled with open spaces.Those spaces absorb sound waves, creating a quieting effect over a blanket of snow.
Fresh snow absorbs sound, lowering ambient noise over a landscape because the trapped air between snowflakes attenuates vibration. That´s why it gets so quite when it snows.
At various times, both Sweden and the Soviet Union made plans to develop moose-mounted cavalries that could operate effectively in deep snow.
“Let It Snow” was written in July, in California, during one of the hottest day on record.
It snowed in the Sahara Desert in 1979.