It all began with a hot day in June, and a volcano dropping black ash on Moominmamma's washing.
Then a crack appeared in the ground, and Moomintroll's toothbrush slipped straight down into the dark and yawning earth.
Then a great flood wave came crashing through Moomin Valley. And that was why the Moomins found themselves a new home, and why they all had so many strange adventures, ones that were odd even by Moomin standards...
- Format: Paperback
- Pages: 144 pages, illustrations
- Publisher: Penguin Books Ltd
- Publication Date: 28/06/1973
- Category: General
- ISBN: 9780140305012