Dai Koyamada

Dai Koyamada is a Japanese rock climber, born on 23 August 1976 in Kagoshima Prefecture, who began climbing in 1993 and is known as one of the leading boulderers of his generation. He won the Japanese National Championship in 1996, then left the competition circuit in 2000 to concentrate on climbing outdoors on natural rock. His reputation rests on first ascents of some of the earliest boulder problems graded 8C, and on very hard sport routes, including the 9a route Logical Progression at Joyama in 2001 and his 2005 repeat of Action Directe in the Frankenjura in Germany. In 2004 he created several new extreme boulder problems at the Hollow Mountain Cave in the Grampians in Australia, among them Sleepy Rave and The Wheel of Life, and in 2017, at the age of 40, he made the first ascent of the 8C+ boulder problem Nayuta in Gero, Japan.