Russell (Martian crater)
The Russell Crater dune field is covered seasonally by carbon dioxide frost. Numerous dark dust devil tracks can be seen meandering across the dunes.
|Eponym||Henry Norris Russell, an American astronomer (1877-1957)|
Russell Crater is a crater found in the Noachis quadrangle of Mars located at 54.9° south latitude and 347.6° west longitude. It is about 139.7 km in diameter and was named after Henry Norris Russell, an American astronomer (1877-1957). 
Dust devil tracks
Many areas on Mars experience the passage of giant dust devils. A thin coating of fine bright dust covers most of the Martian surface. When a dust devil goes by it blows away the coating and exposes the underlying dark surface. Dust devils have been seen from the ground and high overhead from orbit. They have even blown the dust off of the solar panels of the two Rovers on Mars, thereby greatly extending their lives. The twin Rovers were designed to last for 3 months; instead they have lasted more than five years and are still going. The pattern of the tracks have been shown to change every few months. The image below of Russell Crater shows changes in dust devil tracks over a period of only three months, as documented by HiRISE.
Russell Crater dust devil changes, as seen by HiRISE. Click on image to see changes in dust devil tracks in just 3 months.
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