Over the course of almost six weeks towards the end of last year, Curiosity roved around the area of Mars called 'Rocknest', collecting over 900 photos. The majority of the images (850) came from Curiosity's telephoto camera Mast Camera instrument, as well as 21 from the Mastcam's wider-angle camera, and 25 black-and-white shots (most of which were of Curiosity itself) from the Navigation Camera. These have been stitched together to create a 1.3 billion pixel image, showing Mars' dusty landscape across its horizon to Mount Sharp.
The image is ready and waiting for public perusal on Nasa's website. You can even choose between raw and white balanced versions. There's also a slightly more manageable 159MB version available for download, too.
You can zoom in and out, exploring the finer details of Mars' landscape and the differences in the dustiness of the atmosphere. You might be there some time!
(Headsup to Engadget)