On this day in Lewis & Clark history...
During the night, the wind blows the snow from the plains depositing it in drifts in the leeward areas. Only a few Indians visit Fort Mandan today.
From the journals...
28th of December Friday 1804
blew verry hard last night, the frost fell like a Shower of Snow, nothing remarkable to day, the Snow Drifting from one bottom to another and from the leavel plains into the hollows &c
Photo taken with permission at Fort Mandan.