The Vasyugan Swamp is the largest swamp in the northern hemisphere, according to experts. The swamp, which is located in Russia, in southwestern Siberia, occupies about 20,500 sq mi. The swamp is located in the transitional belt between small-leaved forests subzone and zone of the Southern taiga. The Vasyugan swamp is a home for a numerous local fauna including some rare species. Such rare animal species include reindeer, golden eagle, white-tailed eagle, fish hawk, great grey shrike and peregrine, according to Greenpeace Russia. Flora also includes rare and endangered species of plants and plant communities. The swamp is rich in blueberries, cranberries, and cloudberries. It is a major reservoir of fresh water for the region. The absence of settlements at this difficult to access territory provides a high level of safety of the ecosystems and their biodiversity, says the UNESCO World Heritage Centre. There are no proven oil and gas fields in the area.