Mraka Sound (Bulgarian: залив Мрака, ‘Zaliv Mraka’ \'za-liv 'mra-ka\) is a roughly rectangular water body extending 5 km in southeast-northwest direction and 4.2 km in southwest-northeast direction in Biscoe Islands, Antarctica.
The sound is named after the historical region of Mraka in Western Bulgaria.
Mraka Sound is centred at 65°31′40″S 65°42′00″W / 65.52778°S 65.70000°W / -65.52778; -65.70000.
This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.
This Biscoe Islands location article is a stub.