Sredny Ubukun (; , Dunda Bükhen) is a rural locality (a selo) in Selenginsky District, Republic of Buryatia, Russia. The population was 310 as of 2010.Всероссийские переписи населения 2002 и 2010 годов There are 5 streets.
Geography Sredny Ubukun is located 29 km northeast of Gusinoozyorsk (the district's administrative centre) by road. Zhargalatna is the nearest rural locality.Расстояние от Среднего Убукуна до Гусиноозерска
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