Later, under the building devices revealed a strange anomaly and discovered a unique archaeological site - lined with white stone pit diameter of 8 meters and a depth of about 25-30 meters on the walls of which could be seen the remains of a spiral staircase. According to the researchers, this unique underground structure likely represents the entrance to the underground systems of ancient Moscow.

Later, under the building devices revealed a strange anomaly and discovered a unique archaeological site - lined with white stone pit diameter of 8 meters and a depth of about 25-30 meters on the walls of which could be seen the remains of a spiral staircase. According to the researchers, this unique underground structure likely represents the entrance to the underground systems of ancient Moscow.