 Prioksko-Terrasny Nature Reserve

Prioksko-Terrasny Nature Biosphere Reserve ( "Priokska-Tyerrasnyy gosudarstvyennyy prirodnyy biasfyernyy zapavyednik") is one of Russia's smallest "zapovedniks" (nature reserves), sprawling over an area of 5,000 hectares along the left bank of the Oka River in the Serpukhov District of Moskva Oblast.It was established in 1945 as part of the Moscow Nature Reserve and is home to 900 plant species, 130 bird species, and 54 mammal species.