Wikipedia
A pole of inaccessibility marks a location that is the most challenging to reach owing to its remoteness from geographical features that could provide access. Often it refers to the most distant point from the coastline. The term describes a geographic construct, not an actual physical phenomenon. Subject to varying definitions, it is of interest mostly to explorers and adventurers.
The Pole of Inaccessibility Research Station is a defunct Soviet research station in Kemp Land, Antarctica, at the southern pole of inaccessibility (the point in Antarctica furthest from any ocean) as it was defined in 1958 when the station was established. Later definitions give other locations, all relatively near this point. It performed meteorological observations from 14 December 1958 to 26 December 1958. The Pole of Inaccessibility has the world's coldest year-round average temperature of .
It is from the South Pole, and approximately from Sovetskaya. The surface elevation is . It was reached on 14 December 1958 by an 18-man traversing party of the 3rd Soviet Antarctic Expedition. Its WMO ID is 89550.