This image, according to NASA's terse caption, is of potential high-temperature mineral deposits in the Terra Tyrrhena Knob.
The Mars Reconnaissance Orbiter has been circumnavigating its namesake planet since early 2006. It sent back its first high-resolution image in March of that year.
This batch of HiRise pictures was taken between April and early August of this year.
Sharad, by the way, stands for "shallow subsurface radar." One of six science instruments on the Mars Reconnaissance Orbiter along with the HiRise camera, it uses radar waves within a 15- to 25-megahertz frequency band to penetrate up to 1 kilometer into the crust of Mars in the hunt for liquid or frozen water. We're not sure why a Sharad image is included with the HiRise pictures, but we like it anyway.