- February 4, 2024
<Summer and Autumn: Sunflower Park Hokuryu Hot Springs in Hokuryu Town, Hokkaido [Hokkaido Shimbun Digital].
February 4, 2024 (Sun) The Hokkaido Shimbun Digital, an Internet site operated by the Hokkaido Shimbun (Sapporo), carried the article "Summer and Autumn: A Slight Yellow Color at Sunflower Park Hokuryu Onsen in Hokuryu Town" (dated February 2) [...].