Mars’ lake may need an underground volcano to exist
Scientists try to explain how a body of water could remain liquid in such a cold environment
![Mars ice caps](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/02/021519_lg_mars-lake_feat.jpg?fit=860%2C460&ssl=1)
WARMED FROM WITHIN? Mars has frigid polar ice caps. But a theoretical underground chamber of magma could help melt ice near the south pole, creating what some scientists think is a lake hiding under the ice.
NASA, ESA and STScI