Biei Blue Pond - Hokkaido
Biei Blue Pond also called Shirogane Blue Pond ( 白金青い池 ) is a manmade pond that has a unique cobalt blue hue. It is located at Shirogane in the town of Biei in Hokkaido Prefecture, Japan . Biei Blue Pond / Shirogane Blue Pond Biei Blue Pond details This man-made pond was born in the aftermath of the 1988 eruption of Mount Tokachi, a protective measure taken by authorities to shield the town of Biei from the volcanic mudflows. Its mesmerizing azure hue owes its existence to the chance presence of colloidal aluminum hydroxide within its waters. Biei Blue Pond - Biei town, Hokkaido Prefecture Another intriguing theory posits that the pond's water, sourced from the convergence of tributaries near Shirokane Onsen and Shirahige Falls alongside the Biei River, carries minerals such as sulfur and aluminum commonly found in hot springs. When these diverse waters merge, they create an indiscernible "colloid." You will see this sign when you drive along Route 966 Biei Blue Pond