Honshu Island. Yamaguchi Prefecture. In the village of Sengo-Kubara, 2 miles n, w. of Yokoyama village, Iwakuni City. (25.6 miles west of Hiroshima City)., base of east slope of Castle Mountain (Shir-yama) National Forest, west bank of the Nishiki River., Yamaguti, Japan, Asia-Temperate