Mars is covered in intriguing scars—some of the most prominent being impact craters. A particularly unusual example is shown in this new image from ESA’s Mars Express: an ancient triplet comprising not one but three overlapping craters.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/anancientcra.jpg)
Source:
https://phys.org/news/2020-10-ancient-crater-triplet-mars.html