Lavaisjärgsid
Lavaisjärgsid is a geological term referring to a type of volcanic lake that forms within a caldera or crater following a volcanic eruption. These lakes are characterized by their often high temperatures, due to proximity to geothermal activity and residual magma. The water in Lavaisjärgsid can vary in color from clear to opaque, depending on the dissolved minerals and gases present. Some Lavaisjärgsid are acidic, while others can be alkaline.
The formation of a Lavaisjärgsid typically occurs after a volcano has erupted, leaving behind a depression.