Ilmvötn
Ilmvötn is a term originating from Old Norse, often translated as "evil waters" or "sorrowful waters." It is a poetic and somewhat archaic description, not a scientifically defined category. The concept appears in various sagas and Eddic poetry, typically referring to bodies of water that are perceived as dangerous, cursed, or associated with malevolent forces. These waters might be depicted as possessing a dark or turbulent nature, harboring monsters, or being the site of tragic events. The specific context in which ilmvötn are mentioned can vary, but the overarching theme is one of unease and potential peril associated with these watery locales. It can be interpreted as a reflection of the ancient Norse peoples' respect for and fear of the untamed power of nature, particularly the sea and large lakes. The term evokes a sense of mystery and foreboding, suggesting that certain bodies of water were viewed with a mixture of awe and apprehension.