How it could have happened

A hand that once hunted for game
later jotted down by the fire side
A mouth that sifted through the intestines
With a vocal drum now, sings mnemonic lines
Our fingers, dipped early in a river of ink
Had to just touch the walls, or each other 
Poems often painted as cave murals and endearments. 
Their expressions staying solid for millenniums 
Rock hard truths of hunger and want.