Conversation so far:
where does clan of the cave bear take place
The Clan of the Cave Bear is set in pre-historic southern Europe during the current Ice Age but before the last glacial period.
what is the series earth's children about
As a whole, the series is a tale of personal discovery: coming-of-age, invention, cultural complexities, and, beginning with the second book, explicit romantic sex.

Question: how many books are in the series
Self-contained rewrite: how many books are in the series earth's children