Mount Olsen is a snow-covered peak

Summit (topography)

In topography, a summit is a point on a surface that is higher in elevation than all points immediately adjacent to it. Mathematically, a summit is a local maximum in elevation...

 (635 m) standing 0.2 nautical miles (0.4 km) east of Hayter Peak

Hayter Peak

Hayter Peak is a peak, 565 m, standing 0.2 nautical miles west of Mount Olsen along the backbone of Laurens Peninsula, at the northwest end of Heard Island. The peak was surveyed in 1948 by the ANARE , and named by them for Alfred J. Hayter, warrant officer on the expedition ship HMAS Labuan....

 on Laurens Peninsula

Laurens Peninsula

Laurens Peninsula is a rugged peninsula surmounted by several ice-covered peaks. It forms the northwestern part of Heard Island in the southern Indian Ocean. The name was applied by the ANARE following their survey in 1948...

, in the northwest part of Heard Island. The feature appears to have been roughly charted on an 1860 sketch map compiled by Captain H.C. Chester, American sealer operating in the area during this period. It was surveyed in 1948 by ANARE (Australian National Antarctic Research Expeditions

Australian National Antarctic Research Expeditions

The Australian National Antarctic Research Expeditions is the historical name for the Australian Antarctic Program administered for Australia by the Australian Antarctic Division .-The ANARE Name:...

), who named it for Bjarne Olsen, first mate on the whale catcher Kidalkey which visited the island

Island

An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, cays or keys. An island in a river or lake may be called an eyot , or holm...

in January 1929.