Laguna Caliente
Laguna Caliente means ‘hot lagoon,’ and this is very straightforward. Please, no swimming; it is a far cry from a hot spring! While some water bodies are hot and some are acidic, the Laguna Caliente in Costa Rica is both.
It is scalding and toxic, and people have no business being near it. However, its waters change colors; sometimes, it is emerald green, blue, grayish, and even sulfur-yellow! This strange beauty draws in adventurers. They get it- no swimming and think that they are safe from a distance. Well, think again. The Laguna shoots up heated geysers; better run for cover or just run away altogether.