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- Thu Jun 22, 2017 6:05 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: An Unusual Hole in Mars (2017 Jun 12)
- Replies: 24
- Views: 8714
Re: APOD: An Unusual Hole in Mars (2017 Jun 12)
These holes seem to be the result of surface collapse, a "pothole" of sorts. If you look carefully at the patch of ice inside the hole, you can see piles of dirt covering an edge, indicating very recent collapse. I agree that it would be really interesting to make a closer study of that br...