From 65dBnoise @Mastodon

"There is a theory that some of the strange rocks seen around the western rim of Jezero Crater may have been formed in an environment of hot springs.

Here’s something that looks like the tiny mouth of a hot spring. It’s probably just an optical illusion, but nonetheless interesting".

Source & Wiggle 3D Animation: LINK

Credits: NASA/JPL-Caltech/LANL/CNES/IRAP/65dBnoise