Two images of the Nili Plateau landscape to the west of the rover: one taken at about 1:30 PM local time, the other at about 7 PM, in early summer.
The evening shadows really give the landscape a definition and intrigue which the hazy afternoon sun barely hints at, with even small pebbles standing out, and those sandy mega-ripples down below much more easily identified in the distance.
OTOH, I find that the rover tracks (on the right) become harder to see in the evening, so your hiking skills and common sense are key on late-day excursions. You definitely don't want to be lost in this landscape after dark as temperatures quickly head for -100 ºC...
Huge difference. It's a pity we have to suffer the current limits for data transfer between Earth and Mars. Some of the orbiting assets are aging rapidly, so data limits are not going to improve any time soon, else we could hope for many more images at different times of the day.