What is Maslenitsa?
https://en.wikipedia.org/wiki/Maslenitsa#Traditions
Genesis 11:1-9
1 Then the whole earth was of one language and one speech.
2 And as they went from the East, they found a plain in the land of Shinar, and there they abode.
3 And they said one to another, Come, let us make brick and burn it in the fire, so they had brick for stone, and slime had they instead of mortar.
4 Also they said, Go to, let us build us a city and a tower, whose top may reach unto the heaven, that we may get us a name, lest we be scattered upon the whole earth.
5 But the Lord came down, to see the city and tower which the sons of men built.
6 And the Lord said, Behold, the people is one, and they all have one language, and this they begin to do, neither can they now be stopped from whatsoever they have imagined to do.
7 Come on, let us go down, and there confound their language, that everyone perceive not another’s speech.
8 So the Lord scattered them from thence upon all the earth, and they left off to build the city.
9 Therefore the name of it was called Babel, because the Lord did there confound the language of all the earth: from thence then did the Lord scatter them upon all the earth.