who are among the country's most renowned sherpa guides have returned home after becoming the first nepali team to reach the south pole. it's part of a broader quest known as the "explorers' grand slam". tanya dendrinos explains what exactly the ambitious pursuit entails. battling the elements. it's so cold. there's so much wind here. three brothers approaching the summit of mount vincent, the highest peak in antarctica. hey, guys, we are three brothers, we are first time been to the vincent and we reached the summit today. wejust came back from south pole. we are the first brothers, i think, who did the south pole and vincent together. the trio marks the first nepali team to reach the south pole. it's part of their quest to conquer the explorers grand slam, a challenge that involves reaching the south and north poles,