Did a lake spill into it?

Did a lake spill into it?
Did a lake spill into it? Tim Parker put “a really hard stretch” on the NavCam and Pancam orthomosaics over the HiRISE digital elevation model that make up this image so you can see the Perseverance Valley in fine detail. “That looks like a channel to me,” he said. NASA / JPL-Caltech / Cornell / ASU / UA / T. Parker