The stone labyrinths of Bolshoi Zayatsky Island are a group of 13 or 14 labyrinths on Bolshoi Zayatsky Island, one of the Solovetsky Islands in Arkhangelsk Oblast, Russia. Lacking standard archaeological study, a research group from St. Petersberg theorize that the labyrinths are about 2500 years old, according to their orientation, their supposed ritual use, and changes in the direction of the zenith on the solstice throughout history.