I loved the Clan of the Cave bear books, till the last one.
I so disliked Book 6 "Land of Painted Caves" that I had to write my own ending.
My story starts 4 years after "The Shelters of Stone' and continues from there.
Hope you enjoy my book:
"Beyond the Shelters of Stone" in it's 3 parts.
Book I - https://www.fanfiction.net/s/8993946/1/Beyond-the-Shelters-of-Stone-Chapters-1-10
Book II - https://www.fanfiction.net/s/9050618/1/Beyond-the-Shelters-of-Stone-Book-II-Ch-11-18
Book III - https://www.fanfiction.net/s/9121968/1/Beyond-the-Shelters-of-Stone-Book-III-Chapters-19-26