What is your source for this evidence? I can't seem to find any references to it, and I would like to examine the dating techniques.
Cordially,
http://smalt.karelia.ru/~petroglyphs/nachalo_eng.html (for a start)
It's the same sort of thing used with arrowheads and other stone tools.
There are several websites that discuss what seems to be the petroglyphs that explain the duties of a mother ~ one is to find husbands for her daughters.
That's the fundamental beat in the story of Lot ~ the mother's search for matches for her daughters, and her shiftless husband who ends up taking the whole family to a town full of homosexuals.
She is doomed!
I bet this one was a barnburner around the Friday evening campfires in the old days ~ it's actually got comedy routines in it ~ we can just see our late stone age ancestors laughing and rolling on the ground about this poor woman who's married to Lot.