Anthills Chillin'

We have some impressive ant hills in the old pasture behind our property. During a recent snow-shoe excursion to follow the meandering coyote tracks wherever they might lead, I came upon a few of my favorite anthills in all their snowbound glory.
Are the ants living below this blanket of snow sleeping in these days, or (as is more likely) are they, like the bees in slowdown mode within their hives, doing small errands and working their way, bit by bit, through their winter food supply?It's fun to imagine thousands of ants safely hidden away inside these protective mounds, deep below the cold white surface, loafing a bit in this, the "off-season." For verily, if anyone deserves a chance to chill, it's the hard-working ants.