Long before Curiosity's landing, the description of the color camera made me dream: I imagined what wonderful pictures we could get of sunsets and sunrises on Mars. They finally came on sol 956, the 15th of April, 2015.
As Curiosity approached the southern, more linear stretch of the Bagnold dunefield, it captured a panoramic view. In front of the rover is a section of what may be a longitudinal dune, but from the rover's perspective it's a nondescript, rippled sheet of sand.
Ireson Hill is a lonely mound to the south of the Murray Buttes. Dark-colored massive blocks of rock (likely of the Stimson formation) tumble down over colorful Murray mudstones. In the distance, similar buttes retain a more coherent dark capping rock.
On sol 150, Phoenix acquired this image in the early evening, revealing blue frost on its solar panel and on some of the nearby rocks. This was one of the final images sent back, as the lander ceased all communications shortly after, on sol 152.