On September 23rd, the Autumn Equinox Day in 2023, the sun rose directly above Chikubu Island and Mt. Ibuki in Lake Biwa at Imazu Beach in Imazu Town, Takashima City, Shiga Prefecture. Visitors were taking pictures and staring at the mysterious scene.
On the autumnal and spring equinox days, when the sun rises due east and sets due west, the sun passes almost in a straight line over important points such as Tamasaki Shrine (Chiba Prefecture) and Mt. Fuji in the east, and Izumo Taisha Shrine (Shimane Prefecture) in the west. It is said that Mt. Ibuki and Chikubu Island are along the way. Also called "ley lines," they have been attracting attention in recent years.