Analysis of information sources in references of the Wikipedia article "South Sandwich Islands" in English language version.
The area is often cloudy, and a seemingly constant volcanic plume conceals the lake most of the time. Fortunately, the team collected enough shots of the lake from 2003 to 2018 that clearly showed a crater floor containing a superheated lake 295 to 705 feet across. The lava is also 1,812 to 2,334 °F (1,279 °C), with the higher end of that range about as hot as lava on Earth seems to get.