Herajärven kierros Trail in Koli National Park area is around 60 km (38 miles) hiking trail in incredibly beautiful scenery. The Herajärven kierros Trail actually consists of two ring routes around Lake Herajärvi: a 35 km (21.7 miles) loop around the northern end and a 30 km (18.6 miles) loop around the southern end. On the Herajärven kierros Trail, you can enjoy varied nature, rugged hills, green forests and blue lakes.
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