Torronsuo national park sunrise.
Even before its declaration as a national park in 1990, the near-natural state
swamp area was a protected area. the average peat depth in Torronsuo is 5,8 metres.
The thickest peat layers are more than 12 metres, making them the deepest in Finland.
Sphagnum moss grows 1–2 cm per year, and the peat level in the mire is
rising by an average of 1.1 mm per year in the longer term.