Massive explosions. Lava fountains. Mushroom clouds. Pyroclastic flows. Lahar. We’re familiar with these natural occurrences that result from volcanic eruptions. But not many of us know about a different, much weirder type of eruption. It’s called limnic eruption. It’s so rare and bizarre that there are only two recorded eruptions of this kind in history: at Lake Monoun in 1884 and Lake Nyos in 1986. What is a limnic eruption?A limnic eruption, also known as lake overturn, is a type of natural d…