I've been reading Nancy Springer's fantasy since I was a pre-teen - and she's still going strong.
Her work has a kind of pure simplicity to it that suits a certain mood.
The world shown here has than quality: a group of tribes, living in peace and cooperation, proud of the work of their hands.
The story is quite brief, and really, it's not abut the world, or any great deeds: it's about the cycle of life, and dealing with the aging process. A young girl visits her grandmother after time away from her, and has to handle the fact that the elder woman has become forgetful and senile.
Nicely done; especially recommended for younger people, especially pre-teens who may have to handle a similar situation in their lives.