The mightily roaring Juvéninkoski rapids are in Partala about 9km from the centre of Jämsä. As part of the nine rapids of the Nytkymenjoki river, they enchant any spectator with their magnificent 7m waterfall that comes on its own thanks to a steep rock wall. Waterfalls like this are a rare sight in Finland. It is one of the best-known nature sites in Jämsä.
The Valklampi boardwalk takes you across the marsh surrounding Iso Valklampi and Pieni Valklampi ponds. The nature trail is about 4 kilometres in length altogether, about 1.5 kilometres of which are boarded. The trail also crosses the hill ridge that surrounds the marsh.
The Koskikaran kierros trail starts at the Koskikara school in Rutalahti and follows the course of the Rutajoki river for most of its route. Along the trail, you’ll find both roaring rapids and gently steaming river bends, as well as a few detours away from the riverbank up into the woods. At the Porraskoski rapids bridge, a path links this trail to the Leivonmäki National Park.