Scientists have been almost at a deadlock in decoding this blue rock for many years.
In Plescheevo Lake, near the city of Pereslavl-Zaleski, Russia, a strange rock gives scientists a headache. The unusual feature of the rock is that it is never covered with snow in winter. When it rains, the rock will turn blue just like a lake.
No one knows the origin of this stone, there are many rumors about its origin.
According to local legend, this rock is called the Azure Stone. It once rested atop a mountain not far from Lake Plescheevo. On that mountain, a pagan tribe resided, and the stone served as the altar where shamans conducted rituals and offered sacrifices to the gods.
One day, the Azure Stone was pushed down from the mountain’s peak to the shores of Lake Plescheevo. The locals believed the stone had the power to heal their ailments, and they began holding festivals and dancing around it to pray for blessings.
Later, the stone was buried underground by monks from a nearby monastery in the late 17th century. However, 12 years later, in a mysterious turn of events, the enigmatic stone reappeared above ground.
In 1788, authorities decided to use the 12-ton stone as a foundation for a church. Workers transported it on a sled across Lake Plescheevo, but in the midst of winter, the lake’s frozen surface suddenly cracked, and the sled sank into the icy waters along with the stone.
Soon after, local fishermen discovered that the Azure Stone was slowly moving along the lakebed. Each year, it drew closer to the shore. By 1858, “the sunken one” had reached the shore, standing approximately 300 meters from the spot where it had originally sunk. From then on, no one dared to disturb the stone.
As for scientists, they have struggled for years to decode the mysteries of the Azure Stone, proposing numerous theories. Some suggest that the stone surfaced due to strong water currents from the river flowing into the lake.
Others argue that the stone gets embedded in ice each winter and is gradually moved by the thawing ice flows during spring. Yet, how ice or water currents could shift a 12-ton boulder and drag it toward the shore remains an unanswered question.
Some researchers theorize that the stone harbors a powerful, mysterious energy and is itself part of an unknown ecological system.