Vetka Island is an island in the Sozh River near the Belarus town of Vetka. The island is known for a large Old Believers community which lived there for a long time in the 18th and 19th centuries. After that time the community was destroyed by the Russian state, however, and the Old Believers had to move further to the West, into Moldova, Romania and Austria, to avoid interference from the Russian authorities.
Map of Vetka Island, Chernihiv Oblast, Ukraine
References
Vetka Island Wikipedia(Text) CC BY-SA