The third of the eight major hells is the Hell of Crushing, which is located beneath the Hell of Black Ropes but is the same size. Here many pairs of iron mountains face each other. Hell guards with cow heads and horse heads, and armed with sticks chase the sinners between the mountains. Then the pair of iron mountains draw closer, crushing sinners and flooding the earth with blood. Sinners are subject to many other types of suffering.

Suppose 200 years in the human world correspond to a day in the Heaven of Yama, the third heaven in the realm of desire, where heavenly beings live for 2,000 years. If 2,000 years in this Heaven of Yama are equal to one day in the Hell of Crushing, the life span of sinners in this hell is 2,000 years.

Ken Hōbō-shō, A Clarificaton of Slandering the True Dharma, Writings of Nichiren Shōnin, Doctrine 3, Pages 107-108.