[1] Download coordinates as: The Denfeld Mountains are on the Saunders Coast of Marie Byrd Land.

Named by Rear Admiral Byrd after Captain Harold E. Saunders, United States Navy (1890-1961), naval architect, cartographer and toponymist; chief cartographer of the ByrdAE of 1928-30 and 1933-35, who compiled maps of this coast from aerial photographs obtained by the Byrd expeditions; Technical Director, David Taylor Model Basin, Carderock, MD, 1940–46 (Director, 1946-47); Consultant to Bureau of Ships, United States Navy, to 1961; member of United States Advisory Committee on Antarctic Names (US-ACAN), 1943–46; Chairman, US-ACAN, 1947-61.

A peak with a small lake enclosed near the summit, standing 2 nautical miles (3.7 km; 2.3 mi) northeast of Saunders Mountain and 0.5 nautical miles (0.93 km; 0.58 mi) south of Mount Stancliff.

Discovered in November 1934 by a sledging party of the ByrdAE (1933-35) and so named because of the skua gull rookery found there.

A peak 3 nautical miles (5.6 km; 3.5 mi) northeast of Saunders Mountain on the south side of Crevasse Valley Glacier.

A meltwater pond 1 nautical mile (1.9 km; 1.2 mi) southwest of Greegor Peak in the Denfeld Mountains.

The descriptive name, applied by US-ACAN, is suggestive of the shape of the feature in plan view.

A peak, 550 metres (1,800 ft) high, 3 nautical miles (5.6 km; 3.5 mi) west-southwest of the summit of Mount Passel in the Denfeld Mountains.

Named by US-ACAN for David H. Greegor, biologist with the USARP Marie Byrd Land Survey II, 1967-68.

A meltwater pond lying at the southwest foot of Mount Passel in the Denfeld Mountains.

Named for R. Arthur Fulton who was of great assistance in arranging the insurance for the Jacob Ruppert, one of the ships used by the ByrdAE (1933-35).

An isolated nunatak on the south side of Crevasse Valley Glacier, 7 nautical miles (13 km; 8.1 mi) east of Mount Stancliff.

Named by US-ACAN for Frank Tomandl, Jr., aviation electrician's mate, United States Navy, of the McMurdo Station winter party, 1968.

A group of nunataks 5 nautical miles (9.3 km; 5.8 mi) northeast of Mount Passel.

The peak was mapped by the USAS, 1939-41, led by Byrd, and by the USGS from surveys and United States Navy air photos, 1959-65.

Morriss, manager of the Hotel Clark in Los Angeles, who provided office space and quarters for Byrd Antarctic Expeditions of 1928-30 and 1933-35.

Named for Howard B. Fonda who contributed medical supplies to the Byrd Antarctic Expeditions of 1928-30 and 1933-35.

Named for Doctor E. Granville Crabtree, biologist, who was a consultant in the preparation stages of "Operation Highjump II" (which was cancelled) and for Operation Deep Freeze I (1955-56), for which Admiral Byrd was Officer in Charge, United States Antarctic Programs.

Mapped by USAS (1939-41) and by USGS from surveys and United States Navy air photos (1959-65).

A rocky ridge 4 nautical miles (7.4 km; 4.6 mi) long between the Swanson Mountains and Mount Gilmour.

Named for Loran Wells, photographer and observer with the US AS geology party which visited this ridge in 1940.

Named for Harold P. Gilmour, recorder, and subsequently historian and administrative assistant to the expedition commander.

A mainly ice-free mountain 3 nautical miles (5.6 km; 3.5 mi) southwest of Mount Swan.

A rock ridge, 3 nautical miles (5.6 km; 3.5 mi) long and trending west-northwest – east-southeast, situated immediately northeast of Mount Swan.