|location||Alexander I Island , West Antarctica|
Deimos Ridge is a striking, narrow, rocky and mountain ridge made of sandstone and slate in the southeast of the West Antarctic Alexander I Island . It rises 3 miles southwest of Phobos Ridge and the Mars Glacier .high
The coast around the ridge was first sighted by the American polar explorer Lincoln Ellsworth during an overflight on November 23, 1935. The resulting aerial photographs were used by the American cartographer WLG Joerg for an initial mapping. The Falkland Islands Dependencies Survey carried out a survey in 1949. The UK Antarctic Place-Names Committee named it on March 31, 1955 after the Martian moon Deimos .