HiRiSE camera on the MRO managed to fix this fancy crater / pit on the Martian surface. Due to frozen carbon dioxide, the picture resembles Swiss cheese.
In the summer, the southern Martian hemisphere receives additional solar illumination, which is why a rather strange surface formation is shown in the review.
In the picture taken by the MRO, you see an area of frozen carbon dioxide. Some pieces melted, which makes us look at Swiss cheese. But on the right, there is an unusual hole / crater, where carbon dioxide deposits are visible at the bottom.
The MRO is located in orbit for more than 10 years and has performed from 50,000 orbital passes. It has two cameras. CTX is tuned to low resolution and transmits 99% of the surface. HiRISE - high resolution, which helps to explore specific places and objects.