Duły is a village in the administrative district of Gmina Olecko, within Olecko County, Warmian-Masurian Voivodeship, in north-eastern Poland. It is located on the northern shore of Dobskie Lake in the region of Masuria.
History Duły was founded in 1558 by Jan Duła, who bought land to establish a village. It was named after the founder. As of 1600, the population of the village was solely Polish. In 1939, it had a population of 260.
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