Junko Tabei, the first woman to climb Mount Everest, has died at the age of 77, according to Japenese media.
Tabei was just 35 when she climbed the 29,000 feet to reach the world's highest peak in 1975.
Japanese public broadcaster NHK reported that Tabei died at a hospital outside of Tokyo on Thursday.
Tabei had been diagnosed with cancer four years ago, but according to CNN, that didn't stop her from climbing.
In 1992 she conquered the "Seven Summits," making her the first woman to climb the highest mountains on all seven continents.
The "Seven Summits" include Kilimanjaro, Denali, Elbrus, Aconcagua, Carstensz Pyramid, Vinson and Everest.
NHK reported that Tabei's last climb was Japan's Mount Fuji with a group of high school students in 2011.
Beyond mountaineering, Tabei worked to promote the importance of protecting the environment.