Iron Claw - 'Winter' (ca. 1973) from Iron Claw (compiled 2009)
I dig the mournful funeral doom style of this song which even has a plaintive flute melody and is in regard to the heaviness of winter, which is heavy indeed. There is some awesome shredding here for 1973, and the flute/gtr duality ops rule the frozen blizzard lands for sure. The wolves will be cuddling for warmth!