Astronomy Picture of the Day -- Curiosity Inspects Mt. Remarkable on Mars

NASA ^ | May 07, 2014 | (see photo credit)

[SunkenCiv]

Explanation: What has the Curiosity rover come across on Mars? Dubbed Mount Remarkable, the rolling robot has chanced upon this notable 5-meter tall mound during its continuing journey around and, eventually, up 5.5-kilometer high Mt. Sharp. Unsure of the density of the surrounding layered sandstone, the human team on Earth has instructed the car-sized rover on Mars to drill into a rock on the side of Mt. Remarkable to investigate. Quite possibly, water involved in creating the dense sandstone could have helped to support ancient life on the red planet. Mt. Sharp, the unusual central peak of Gale Crater, has a similar base-to-peak height as Earth's Mt. Everest.

[The Cajun]

Weird, but how big is it?

No idea, but it does seem to have some left/right symmetry.
It just doesn't look natural compared to the rest of the image, stands out.

[The Cajun]

Don't know, but that picture sure looks like sandy silt left over once the water totally receded.
It almost looks like there are several different erosion layers caused by decreasing water flow over time, shades of a little Grand Canyon and then the big *dry up*.