The Tellari swamps are an area of marshland at the head of the major river in Antiva, near the town of Seleny.
Antivans believe that Yavana, a Witch of the Wilds lives in the swamps. They tell ghost stories about the wetlands and talk about beast men and the unborn children of drowned girls. The swamps are feared greatly, and devoid of civilized habitation.
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for Dragon Age: The Silent Grove.