From the urban area southwest approximately 9km, at the summit of a mountain of 333m elevation existing Husband and Wife Rocks, in Meiji 36th year were discovered and in Taishō 6th year Sōma Myōken Shrine's divided spirit was enshrined, and until early Shōwa period rituals were being performed.
Closely as if snuggling up, of about 10m "Male Rock" and "Female Rock", and that small "Child Rock" are being called, large and small three rocks stand side by side, and all of them are having a shape like piled up boards.
At times nature that shows us a mysterious formation it is, but the rock quality is hornblende andesite, and if the age is estimated, it is lava that erupted on land by volcanic activity at around 13 million years ago, humankind appears far before's, and being, it is thought that either this lava was eroded during a long period of years and months and became into the current shape of three separated rocks, or separately lava piled up and became into three shapes.