In the Christian tradition , Maslenitsa is the last week before the onset of Great Lent .
In Slavic mythology , Maslenitsa is a sun - festival , personified by the ancient god Volos , and a celebration of the imminent end of the winter .
In the Christian tradition , sun - festival is the last week before the onset of Great Lent .
In Slavic mythology , Maslenitsa is a sun - festival , personified by the ancient god Volos , and a celebration of the imminent end of the winter .