skygiants

Oh, excellent! If you like it, I also recommend The Little White Horse by the same author -- fewer siblings, but more wacky subplots to do with curses and pirates and unicorns and imaginary friends who turn out to be real (it was my ULTIMATE comfort book at a child. it also describes food in long loving detail, that way older English children's books do). Both of them are about children coming to a place and having to fix it somehow, usually through learning about the mistakes made in the past and doing something to being balance.