Talk:Lava Lakes/@comment-33115244-20180126165018/@comment-11319-20190504234759

The boiling point at 1500 m underwater is 104.78 C, no where near the melting point of rock. Now there's a possibility that it's not the same kind of stone that we have on earth. Maybe it's a rock with much lower melting temperature. In that case it wouldn't glow red hot. It would have to be a minimum of 900 K (626.85 C).

I think the explanation is, the designers didn't really think this through. They thought about it as hard as the Lost River. Where you have a river at the bottom of an underwater cave.

Sources: https://www.omnicalculator.com/chemistry/boiling-point-altitude http://www.giangrandi.ch/optics/blackbody/blackbody.shtml