The stone is estimated to weigh approximately 3.1 tons.
Local geological history suggests the boulder was transported to its current location by retreating glaciers.
In the 17th century, a local priest reportedly had the stone buried in a deep pit to discourage pagan rituals, but it surfaced again years later.
The boulder exhibits a distinct blue-grey color when wet, which is caused by the refraction of light on its crystalline surface.
It is one of the few surviving archaeological remnants of the ancient Merya people who inhabited the region before Slavic settlement.
The stone is slowly sinking due to the soft, marshy nature of the soil surrounding the lake shore.
Legends from the 18th century claim the stone moved itself from the pit to the surface against human intervention.
Siniy Kamen' (the Blue Stone) is a large, dark-gray glacial boulder with a bluish hue located on the eastern shore of Lake Pleshcheyevo. It is a remnants of the pre-Christian Merya culture and has been a site of pagan worship for over a thousand years. The boulder is composed of coarse-grained quartz biotite schist and measures approximately 3.1 tons in mass. It is known for its tendency to partially sink into the swampy soil over time, periodically requiring historical relocation efforts. The stone was officially recognized as a protected monument within the Plescheevo Ozero National Park. Visitors often leave coins, ribbons, and small items on the surface as offerings.
From the wooden viewing platform directly overlooking the boulder.
Wear waterproof footwear as the ground near the shore can be muddy and swampy.
Bring mosquito repellent, as the lake-side vegetation is prone to high insect activity during summer months.
Visit the elevated boardwalks to observe the stone without damaging the surrounding protected wetland ecosystem.
Avoid feeding local wildlife near the site and do not discard waste in the protected nature area.
Respect the site as a cultural monument; do not climb directly on the stone or attempt to chip away pieces.
