No the greatest mountaineer is not a Westerner or even someone from the South Pacific he is Apa Sherpa. Apa has officially summitted Mount Everest, or Mt. Sagarmatha in the local dialect, 21 times. His first accent of Everest was on May 1, 1990. By doing the math you discover that Apa has summitted not only 21 times but 21 consecutive times. This is more than just impressive, but phenomenal. You can read more about his last accent on the Explorers website.