Ostrusha Nunatak (Bulgarian: нунатак Оструша, ‘Nunatak Ostrusha’ \'nu-na-tak o-'stru-sha\) is the rocky hill of elevation 841 m[1] projecting from the ice cap in the northeastern periphery of Sentinel Range in Ellsworth Mountains, Antarctica. It is named after the Thracian mound of Ostrusha in Southern Bulgaria.
- ^ Reference Elevation Model of Antarctica. Polar Geospatial Center. University of Minnesota, 2019