It is northwest of the Anare Mountains The bay stretches between Lunik Point below Mount Dergach in the west and Cape Williams in the east.

[2] Sailing Directions for Antarctica (1943) says "Lillie Glacier Tongue extends northward from snow-covered rounded hills between Cape Cheetham and Williams Head for a distance of about 20 miles, and is about 125 feet (38.1 m.) high.

Many grounded icebergs and unbroken fast ice fringe the shore, and a strong northwestward current sets along the coast.

A glacier rising just east of Mount Bruce in the Bowers Mountains and flowing north to the coast between Stuhlinger Ice Piedmont and Rosenau Head.

An ice-covered coastal point, lying 3 nautical miles (5.6 km; 3.5 mi) northeast of Mount Dergach on the west side of Ob' Bay.

A flat-topped, ice-covered mountain located just west of Ob' Bay and south of Lunik Point.

Glacier, 11 nautical miles (20 km; 13 mi) long, draining the north and northeast slopes of Stanwix Peak in the Bowers Mountains and flowing ENE to Ob' Bay.

It flows northeast from Mount Hager and enters Ob' Bay just west of Platypus Ridge.

Named by US-ACAN for Petr Astakhov, Soviet exchange scientist at the U.S. South Pole Station in 1967.

Discovered by the British Antarctic Expedition, 1910-13, when the Terra Nova explored westward of Cape North in February 1911.

[10] This article incorporates public domain material from websites or documents of the United States Geological Survey.