The former Hokkaido Coal Mining Company's Horonai Coal Mine Power Plant, located in Mikasa City, Hokkaido, is a valuable heritage site that conveys the spirit of the Taisho era. As the first modern coal mine, this facility was able to convert high-voltage electricity sent from a power plant 20km away into machine use, enabling efficient mining. Its modern brick exterior is a distinctive feature, and its appearance, having survived over 100 harsh winters, captures the hearts of those who see it. Once you visit, you'll be drawn into its depth without a doubt!