The Oulanka Biosphere Reserve is located in northeastern Finland and is part of the UNESCO Biosphere Reserves network. It covers an area of approximately 1,500 square kilometers, featuring diverse ecosystems, including forests, rivers, and wetlands. The reserve is known for its rich biodiversity, home to various plant and animal species, some of which are rare or endangered. Established in 1989, the Oulanka Biosphere Reserve aims to promote sustainable development and conservation. It offers numerous recreational opportunities, such as hiking and canoeing, with well-marked trails like the Karhunkierros Trail. The reserve also supports research and education about environmental protection and sustainable practices.