Blue Lake South Lobe The Blue Lake South Lobe is in the Cape Roys area, In Ross Island. Code: BLSL South lobe of ice-covered lake, <1 m moat, area is about 56,794 at the time, the water temperature was about 1.5 degrees celsius. Coordinates: Latitude: -77.545921325684 Longitude: 166.181732177734 Read more about Blue Lake South Lobe