The mountain range stretches between the Ross Sea and the Weddell Sea the entire width of Antarctica, hence the name.
With a total length of about 3,500 km, the Transantarctic Mountains are one of the longest mountain ranges on Earth.
The Antarctandes are even longer, having in common with the Transantarctic Mountains the ranges from Cape Adare to the Queen Maud Mountains, but extending thence through the Whitmore Mountains and Ellsworth Mountains up the Antarctic Peninsula.
The 100–300 km wide range forms the boundary between East Antarctica and West Antarctica.
The East Antarctic Ice Sheet bounds the TAM along their entire length on the Eastern Hemisphere side, while the Western Hemisphere side of the range is bounded by the Ross Sea (C.Michael Hogan.
2011) in Victoria Land from Cape Adare to McMurdo Sound, the Ross Ice Shelf from McMurdo Sound to near the Scott Glacier, and the West Antarctic Ice Sheet beyond.

The summits and dry valleys of the TAM are some of the few places in Antarctica not covered by ice, the highest of which rise more than 4,500 metres (14,800 ft) above sea level.
The McMurdo Dry Valleys lie near McMurdo Sound and represent a special Antarctic phenomenon: landscapes that are snow and ice free due to the extremely limited precipitation and ablation of ice in the valleys.
The highest mountain of the TAM is 4,528 m high Mount Kirkpatrick in the Queen Alexandra Range.
Isolated peaks surrounded by ice are referred to as nunataks.
The mountain range stretches between the Ross Sea and the Weddell Sea the entire width of Antarctica, hence the name. With a total length of about 3,500 km, the Transantarctic Mountains are one of the longest mountain ranges on Earth. The Antarctandes are even longer, having in common with the Transantarctic Mountains the ranges from Cape Adare to the Queen Maud Mountains, but extending thence through the Whitmore Mountains and Ellsworth Mountains up the Antarctic Peninsula. The 100–300 km wide range forms the boundary between East Antarctica and West Antarctica. The East Antarctic Ice Sheet bounds the TAM along their entire length on the Eastern Hemisphere side, while the Western Hemisphere side of the range is bounded by the Ross Sea (C.Michael Hogan. 2011) in Victoria Land from Cape Adare to McMurdo Sound, the Ross Ice Shelf from McMurdo Sound to near the Scott Glacier, and the West Antarctic Ice Sheet beyond.
The summits and dry valleys of the TAM are some of the few places in Antarctica not covered by ice, the highest of which rise more than 4,500 metres (14,800 ft) above sea level. The McMurdo Dry Valleys lie near McMurdo Sound and represent a special Antarctic phenomenon: landscapes that are snow and ice free due to the extremely limited precipitation and ablation of ice in the valleys. The highest mountain of the TAM is 4,528 m high Mount Kirkpatrick in the Queen Alexandra Range. Isolated peaks surrounded by ice are referred to as nunataks.
Transantarctic Mountains