On the features of snow angels
In most snow angels, the snow clears away quite nicely except in a couple places. The most obvious is the long ridge in the center where the two legs meet. It seems that a small mogul forms just to the left and right of each hip. There are two more moguls on each side of the head. I think that these last two form in the crooks of the elbows if the arms get far enough above the head. The hip bumps show up pretty well here, and the head bumps to some extent here.
