Tsuneo Hasegawa

Tsuneo Hasegawa (長谷川 恒男, Hasegawa Tsuneo, December 8, 1947 – c. October 10, 1991) was a Japanese alpinist. His achievements include the winter solo ascent of the “Great North Faces of the Alps” or "North Face Trilogy" (Matterhorn in 1977, Eiger in 1978, Grandes Jorasses in 1979) and the world’s first winter solo ascent of the South Face of Aconcagua in 1981. He died in 1991 in an avalanche while ascending the Ultar Ⅱ South east face.

• 1977 World second winter solo ascent to Matterhorn North face
• 1978 World first winter solo ascent to Eiger North face
• 1979 Winter solo ascent to Grandes Jorasses North face
• 1980 Winter solo ascent to Aconcagua North face Normal Route
• 1981 World first winter solo ascent to Aconcagua South face France Route

• Sase, Minoru (1994) "長谷川恒男虚空の登攀者" Yama To Keikoku Publishing (山と溪谷社). ISBN 4-12-203137-0
• Sase, Minoru (1994) "長谷川恒男虚空の登攀者" Yama To Keikoku Publishing (山と溪谷社). ISBN 4-12-203137-0
• Sase, Minoru (1994) "長谷川恒男虚空の登攀者" Yama To Keikoku Publishing (山と溪谷社). ISBN 4-12-203137-0
• Sase, Minoru (1994) "長谷川恒男虚空の登攀者" Yama To Keikoku Publishing (山と溪谷社). ISBN 4-12-203137-0
• Sase, Minoru (1994) "長谷川恒男虚空の登攀者" Yama To Keikoku Publishing (山と溪谷社). ISBN 4-12-203137-0