A snowdrift is a pile of snow that forms when strong winds blow snow and it accumulates in a particular area, usually in the shape of a large mound. Full definition
In late fall, pregnant mother polar bears build cozy dens in snowdrifts. (discovermagazine.com)
On Arctic survival with the Canadian Air Force, I learned that the winds were so consistent that the Inuit used the direction of snowdrifts for guides even under «white out» conditions. (drtimball.com)
He wandered through 15 - foot snowdrifts in freezing temperatures for seven days before National Guard searchers found him. (discovermagazine.com)