West Lusatia
Culturally and historically , West Lusatia corresponds to western Upper Lusatia , including part of the Brandenburg county of Oberspreewald-Lausitz ( east of Tettau and Ruhland ) , between the rivers Pulsnitz and Black Elster . 
<triplet> Tettau <subj> Oberspreewald-Lausitz <obj> located in the administrative territorial entity <triplet> Ruhland <subj> Oberspreewald-Lausitz <obj> located in the administrative territorial entity <subj> Black Elster <obj> located in or next to body of water <triplet> Black Elster <subj> Pulsnitz <obj> tributary