Wiktionary
snow under
vb. (context transitive English) To overwhelm (with large quantities of something to be dealt with).
Usage examples of "snow under".
The snow under her was crimson, and shattered bone gaped in the wound as she checked the magazine indicator.
He stamped them into the snow under him in the wallowing struggle.
Always alert, they ghosted along in silence except for the faint crunch of the snow under their soft, knee-high boots.
There was something almost sentient about the implacable power of winter here, and the squeak of fresh snow under Bahzell's boots and the jingle of harness or thud of hooves or occasional snatch of conversation were lost and tiny in the vast stillness.