Palsa bogs In Iitto, along Highway 21, 56 kilometres north of Karesuvanto are permafrost palsas of several metres in height may be admired using the duckboards constructed in 2002.
Along the nature trail are information boards providing information on the palsa bogs. Palsas are rare, mounds of perennially frozen peat and mineral northern wetlands, the height of which can reach up to seven metres and being twenty metres wide. The frost beneath the palsas never thaws, and freezing phenomena are one of the reasons for their creation. Palsas are protected!
Photo: Pirkka Aalto