You may be thinking of the Trans-antarctic Mountains. However, anything that crosses the entire continent of Antarctica could be prefaced with the descriptor 'transantarctica'.
Transantarctic refers to something that spans or crosses the continent of Antarctica. For example, the Transantarctic Mountains are a mountain range that runs across Antarctica from the Weddell Sea to the Ross Sea, dividing the continent into East Antarctica and West Antarctica.
The three largest mountain ranges on the Antarctic continent are the Transantarctic Mountains, the West Antarctica Ranges, and the East Antarctica Ranges. The Transantarctic Mountains compose a mountain range in Antarctica which extend, with some interruptions, across the continent from Cape Adare in northern Victoria Land to Coats Land. These mountains serve as the division between East Antarctica and West Antarctica. They include a number of separately named mountain groups, which are often again subdivided into smaller ranges.
The Transantarctic Mountains are located in Antarctica, the southernmost continent on Earth. They divide East Antarctica from West Antarctica and are one of the longest mountain ranges in the world.
The Transantarctic Range is located in Antarctica, which is not only a continent but also the coldest, windiest, and driest continent on Earth.
The Transantarctic Mountains are located in Antarctica, stretching across the entire continent from the Weddell Sea to the Ross Sea. They act as a natural boundary between East Antarctica and West Antarctica.
The main mountain range in Antarctica is the Transantarctic Mountain Range.
The Transantarctic Mountain range is not one single mountain but a long, continuous range of mountains that divides East Antarctica from West Antarctica. The highest peak in this range is Mount Kirkpatrick, which is 14,526 feet (4,428 meters) tall.
The Transantarctic Mountains divide Antarctica into eastern and western regions. These mountains stretch across the continent and act as a physical barrier, separating the coastal regions from the interior of Antarctica.
the polar plateau is east of the transantarctic mountains
The Transantarctic Mountain Chain
The "Transantarctic Mountains" divide east and west Antarctica. The mountain range probably got that name because it spans the continent.
The Transantarctic Mountains are located in Antarctica and stretch across the continent from the Weddell Sea to the Ross Sea, dividing East Antarctica from West Antarctica.