The old-growth forest of Multiharju is the heart of the national park
The heart of the National Park is the old-growth forest of Multiharju , which has been protected already in 1910. The oldest shield bark pines are almost 400 years old, and there are still marks of the past forest fires on their stems. Here and there in the shadows of the ancient spruce forest there are handsome old Aspens (Populus tremula), but most of the deciduous trees have fallen to the ground and become overgrown with moss a long time ago.
Old growth forests are also found around Lake Pitkäjärvi, along River Seitsemisjoki, and on forest islands on the bogs. Many hole nesters live in the old forests: the Eurasian Pygmy Owl (Glaucidium passerinum), the Ural Owl (Strix uralensis), the Three-toed Woodpecker (Picoides tridactylus), the Red-breasted Flycatcher (Ficedula parva), and the Siberian Flying Squirrel (Pteromys volans) which in the 2000 Red List evaluation was classified as vulnerable.
The plants and lichen species of the old forests also include the Northern Coral-root (Corallorhiza trifida), the Lung lichen (Lobaria pulmonaria), and a lichen species called Nephroma resupinatum. Decayed wood offers habitat for many threatened insects.
Keep your feet dry while visiting Soljastensuo wetland
Mires make more than half of the National Park area. There are pine bogs, spruce bogs and quite large treeless bogs. Most of the mires in Seitseminen were drained in the 1960s and 70s. Since 1987 they have been under restoration (www.metsa.fi) back into their natural state. In the spring and summer the mires are full of life. Black Grouses (Tetrao tetrix) are courting on the spring snow. The Common Crane (Grus grus) and the Whooper Swan (Cygnus cygnus) bring up their brood in the mire ponds, the Wood Sandpiper (Tringa glareola) feels at home in the edge of the mire and the forest. On the mires of Seitseminen you can also see the northern Willow Grouse (Lagopus lagopus).
The European Pine Marten in Seitseminen
The emblem species of Seitseminen, the European Pine Marten (Martes martes), is one of the most common mammals in the National Park. It mostly moves about in the night, so it is not very often seen.
There are bears (Ursus arctos) living in Northern Pirkanmaa Region. During the resent years also wolves (Canis lupus) have spread into the area. The National Park's area is too small for both of the predators. In spring and autumn bear's footprints have been found in remote parts of the park. The wolves wandering through the area leave their footprints to be seen best during snowy seasons. In other seasons their tracks are hard to spot. Other areas, which are more popular with visitors, are less popular with animals. Both bears and wolves avoid any human contact and will move away from human's path. Even a small group makes quite a lot of noise, a lone hiker can, for example, sing a bit to make his or her presence known.
Seitsemisharju Esker, Salmiharju Esker
The most visible signs of the Ice Age in Seitseminen National Park are the eskers which run from north to south. Seitsemisharju Esker on the western edge of the park rises about 20 metres from its surroundings. Its highest places are Rappumännynmäki (220 metres above the sea level) and Kulomäki, which have been islands during the sea and lake phases after the Ice Age. To the east of Seitsemisharju Esker, there is lower Salmiharju Esker, and on top of it is the road to Pitkäjärvi Loggers' Cabin.
Discover a forgotten culture at Kovero Crown Tenant Farm
In the southern part of the park, the fields, meadows, paddocks and forest pastures of Kovero Crown Tenant Farm and their surroundings form an important entity. The species of the traditional biotopes include the Eyebright (Euphrasia stricta), the Sweet Vernal Grass (Anthoxanthum odoratum), the White Hedge Bedstraw (Galium album), and the Frog Orchid (Coeloglossum viride). The traditional landscapes are maintained by pasturing and hay making. The grounds of the farm are full of plants which in the old times were used for spices and decoration.