When a comet threatens life in Moominvalley, Moomintroll and Sniff must warn everyone in time. But will they manage, when adventure is hiding behind every corner? Join them as they travel to the Observatory by turning the pages to reveal five stunning pop-up scenes. Explore the Lonely Mountains, dance through the night in a deep dark forest, and cross a steaming abyss!
- Author: Jansson, Tove & Selena, Elena
- Publisher: Pan Macmillan
- Format: Hardback
- Publication Date: 17/09/2026
- B-Code: B086648
- Illustrated: Illustrated
- Pages: 10
- Dimensions: 269x221mm