What was the first mountain Sir Edmond hillary climbed?

Sir Edmund Hillary's first significant mountain climb was Mount Olivia in New Zealand's Southern Alps in 1939. However, he is best known for being one of the first two climbers to reach the summit of Mount Everest in 1953, alongside Tenzing Norgay. Hillary's early climbs in New Zealand laid the foundation for his later achievements in high-altitude mountaineering.