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Three Nepali brothers are trying to achieve the Explorers' Grand Slam.
They must go to the North and South Pole and climb each continent's highest mountain.
Chhang Dawa and Mingma have just been to the South Pole.
On their way back, all three siblings climbed the 4,892 metre high Mount Vinson.
Chhang Dawa and Mingma are the first siblings to climb the world's 14 highest mountains together.
Their younger brother Tashi Lakpa is also a record holder.
At 19, he was the youngest climber to go up Everest without additional oxygen.
The Sherpa people are from the valleys near Everest.
They often work in the mountain climbing business in the Himalayas.
They help other climbers who are visiting.
In 2021, Nepali climbers became the first to climb K2 during the winter.
This demonstrated their exceptional skills.
The Sherpa brothers' Grand Slam attempt still has five mountains to climb and the North Pole to go.
They plan to do all this in a year.
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