Did ancient Russia have masts?

Yurodivys (юродивые) in ancient Rus' were people who voluntarily renounced earthly pleasures in the name of Christ. Such people looked like madmen, and led a wandering lifestyle with the aim of obtaining inner peace and defeating the root of all sin - pride. They were valued and were considered close to God. Their opinions and prophecies were taken into consideration and they were even feared.

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