Author(s) Metsähallitus
Published by Metsähallitus, Vantaa, 2023
Pages 2 pp.
Language
english
Other languages
Summary

Travel back in time to Koli’s ancient history to find the rare Koli crystal, cyanite. If you can solve all the magic checkpoints along the 3.1 km route, you might find cyanite and its secrets hiding in the hills.