Кратер Королёва, заполненный водяным льдом.
Кратер (нет, это кратер, а не вулканический конус).
Сама статья тоже интересная.
Earlier this year, the rover's tunable laser spectrometer, called SAM, which stands for Sample Analysis at Mars, detected the largest amount of methane ever measured during its mission.
SAM has also found that over time, oxygen behaves in a way that can't be explained by any chemical process scientists currently understand.
SAM has had plenty of time -- about six years -- to sniff and analyze the atmospheric composition on Mars. The data revealed that at the surface, 95% of the atmosphere is carbon dioxide, followed by 2.6% molecular nitrogen, 1.9% argon, 0.16% oxygen and 0.06% carbon monoxide.
Like Earth, Mars goes through its seasons; over the course of a year, the air pressure changes. This happens when the carbon dioxide gas freezes in winter at the poles, causing the air pressure to lower. It rises again in the spring and summer, redistributing across Mars as the carbon dioxide evaporates.
In relation to the carbon monoxide, nitrogen and argon also follow similar dips and peaks. But oxygen didn't.
Surprisingly, the oxygen actually rose by a peak increase of 30% in the spring and summer before dropping back to normal in the fall...