Abstract
Buryats are a community that is a tribe of Mongols and lives in the Altay geography, has encountered various religions throughout history. Although Lake Baikal is located within the borders of the Irkutsk Autonomous Region, it has a very important place for the Buryat community. For the Buryat community, which adheres to their traditional beliefs, Olkhon Island, located in Lake Baikal, is seen as a legacy and sacred place left by their ancestors. According to the belief, Olkhon Island is considered one of the most important global poles of shamanic energy for the Buryat community, thought to provide a connection with the metaphysical realm through the special areas it contains. Olkhon Island, including various mythological elements and legends, has been home to Altay communities. Some of beliefs about Olkhon Island are considered valuable in terms of showing the common elements of the Mongolian and Turkish communities that have lived together throughout history and being able to reveal their interaction with each other. In this article, the relationship of Olkhon Island with the sacred and its importance in terms of world cultural heritage is evaluated by using descriptive and comparative methods. Olkhon Island will provide valuable data on the basis of the beliefs of the mentioned communities when evaluated in the context of their interaction and connection with the outside world being quite limited, the preservation and maintenance of the traditional beliefs of the Turkish and Mongolian communities.