A nice cover from Russia, depicting a miniature sheet issued in 2015 with a World Natural Heritage Site of Russia: the Lena Pillars Nature Park. Lena Pillars is the name given to a natural rock formation along the banks of the Lena River in far eastern Siberia. The pillars are 150–300 metres high, and were formed in some of the Cambrian period sea-basins. The highest density of pillars is reached between the villages of Petrovskoye and Tit-Ary. The Lena Pillars Nature Park was inscribed on the World Heritage List in 2012.
