The Putorana Plateau, or the Putorana Mountains is a mountainous area in the Russian Federation. It is a large massif or plateau crossed by mountain ranges. In July 2010, the Putorana Reserve was inscribed on the World Heritage List as "a complete set of subarctic and arctic ecosystems in an isolated mountain range, including pristine taiga, forest tundra, tundra and arctic desert systems, as well as untouched cold-water lake and river systems.