Wolf
in the Maasai culture of Kenya, children are allowed and encouraged to have any form of sex amongst one another. However, at the time of puberty, once on is capable of bearing children, they're required to get married.

i disagree that children aren't "mature" enough for sexual activity, it is our society which is not mature enough. How many children masturbate? all of 'em. Its more natural than you've demonized it to be.