On sol 439, Curiosity had completed about a third of her long drive toward Mount Sharp. Cooperstown is the second outcrop of rock that Curiosity paused at on the way (the first being Darwin). While at Cooperstown, Curiosity performed a software upgrade and suffered a problem that put her into safe mode for a few days, but she recovered by sol 449. This image has been processed from archival data from the Planetary Data System.
On sol 20, Curiosity looked back toward the blasted ground where it had landed. This is Burnside Scour, one of four spots where the descent stage's rockets blasted the ground. Burnside was the northwestern scour (the one farthest to the left in the sol 3 panorama).