A documentary by Sakube Yamamoto (1892-1984), an artist who left behind more than 1,000 paintings and diaries depicting his work and life in the coal mines. Born in Chikutoyo, Fukuoka Prefecture, which was the largest coal producing area in Japan, in 2014, he was born in Chikusei in 2014, and in 2014, he wanted to leave a record of his life in the coal mines to his children and grandchildren. I took up painting after I turned 60. From the testimonies of people who knew Sakubei directly, Sodo North Road. Sakube, an unknown coal miner, visited an active coal mine in Japan, and why did his drawings convey to future generations, "The world's treasures" and "the world's treasures" that should be passed on to future generations?

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