The range consists of many individual mountains and nunataks that trend east–west for 40 miles (64 km) along the north side of Scylla Glacier.

The western part of the range was first visited by an ANARE Australian National Antarctic Research Expeditions (ANARE) party led by John Béchervaise in November 1955.

The range was again visited in December 1956 by the ANARE southern party, 1956–57, led by W.G.

It was named after a character in The Three Musketeers, a novel by Alexandre Dumas, père which was the most popular book read on the southern journey.

[1] Geographical features include: This article incorporates public domain material from websites or documents of the United States Geological Survey.