|Lena Pillars Nature Park|
|Name as inscribed on the World Heritage List|
|Inscription||2012 (36th Session)|
Lena Pillars (Russian: Ле́нские столбы́, tr. Lenskiye Stolby) is the name given to a natural rock formation along the banks of the Lena River in far eastern Siberia. The pillars are 150-300m (490-985ft) high, and were formed in some of the Cambrian Period sea-basins. The Lena Pillars National Park was inscribed on the World Heritage List in 2012.
One may plan a river cruise by contacting a travel service in the city of Yakutsk. Those interested in Limnology or Ecotourism, and others who visit Lake Baikal, can coordinate a river sojourn with the aid of a guide from the Lake Baikal region; however, consider that Yakutsk, the world's coldest city and where the river cruises originate, is approximately 900 miles northeast of Lake Baikal.
Few modern amenities exist in this part of the world (Siberia), unless one travels by cruise ship on the Lena River.
Hiking trails in the region are steep and at times precarious.
The pillars themselves consists of the alternating horizons of limestone, marlstones, dolomite and slate of the Lower/Middle Cambrian, which are weathered in such a way that it produces the rugged outcrops. 
These types of rocks are commonly formed in marine environments and the horizontal layering and vertical variation indicates marine transgression/regression; with the slate representing the deep marine, slightly metamorphosed shales.