Lake Usoriyama - Hell's Mountain (Aomori, Mutsu) 恐山、青森
Lake Usoriyama (宇曽利山湖) is a volcanic crater with an almost deceptively attractive-looking white sand beach, but the water is actually full of poisonous sulphur, bubbling in all sorts of unnatural shades from canary yellow to phosphorescent green. A truly frightening yet peaceful and eerie place...