Do you see a dome or a pit? Sometimes it is hard to tell! In this case, the answer is that we’re looking at a pit, if the title didn’t already give it away.
Levity aside, we can tell this is a pit because we know what direction the sunlight is coming from and which side should be in shadow. This pit has formed on the south polar layered deposits
. Why did it collapse? That is the real question to be answered. ID
: 28 December 2020 altitude
: 245 km
#Mars #science #NASAtwitter
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