The Porthos Range is the second range south in the Prince Charles Mountains, extending for about 30 miles in an east-to-west direction between Scylla Glacier and Charybdis Glacier. First visited in December 1956 by the ANARE southern party under W.G. Bewsher and named after Porthos, a character in Alexandre Dumas, père's novel The Three Musketeers, the most popular book read on the southern journey.
References
Porthos Range Wikipedia(Text) CC BY-SA