Walton Mountains is an isolated chain of three predominantly snow-covered mountain

Mountain

Image:Himalaya_annotated.jpg|thumb|right|The Himalayan mountain range with Mount Everestrect 58 14 160 49 Chomo Lonzorect 200 28 335 52 Makalurect 378 24 566 45 Mount Everestrect 188 581 920 656 Tibetan Plateaurect 250 406 340 427 Rong River...

 masses, rising to 1, 450 m at Mount McArthur

Mount McArthur (Antarctica)

Mount McArthur is the highest peak in the Walton Mountains, Alexander Island. Named by United Kingdom Antarctic Place-Names Committee after Malcolm McArthur, British Antarctic Survey geophysicist at Stonington Island, 1971–73, who worked in northern Alexander Island....

, extending south from Schubert Inlet

Schubert Inlet

Schubert Inlet is an ice-filled inlet, 14 nautical miles long and 5 nautical miles wide, indenting the west coast of Alexander Island between the Colbert and Walton Mountains. Mapped from air photos taken by the Ronne Antarctic Research Expedition , 1947–48, by Searle of the Falkland Islands...

 for 25 miles (40 km) in Alexander Island

Alexander Island

Alexander Island or Alexander I Island or Alexander I Land or Alexander Land is the largest island of Antarctica, with an area of lying in the Bellingshausen Sea west of the base of the Antarctic Peninsula, from which it is separated by Marguerite Bay and George VI Sound. Alexander Island lies off...

. First seen from the air by Lincoln Ellsworth

Lincoln Ellsworth

Lincoln Ellsworth was an arctic explorer from the United States.-Birth:He was born on May 12, 1880 to James Ellsworth and Eva Frances Butler in Chicago, Illinois...

 on November 23, 1935, and roughly mapped from photos obtained on that flight by W.L.G. Joerg. Resighted from the air by the United States Antarctic Service (USAS) in 1940, and in 1947 by the Ronne Antarctic Research Expedition

Ronne Antarctic Research Expedition

The Ronne Antarctic Research Expedition was an expedition from 1947-1948 which researched the area surrounding the head of the Weddell Sea in Antarctica.-Background:...

 (RARE) under Ronne. Ronne named the mountains after Lieutenant Colonel R.C. Walton, United States Marine Corps

United States Marine Corps

The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

 (USMC), of the Office of Naval Research

Office of Naval Research

The Office of Naval Research , headquartered in Arlington, Virginia , is the office within the United States Department of the Navy that coordinates, executes, and promotes the science and technology programs of the U.S...

, who was instrumental in obtaining the loan of a ship from the Navy and in securing Navy assistance for the Ronne expedition.