A normal 'not altered' view of the HiRISE image section from ESP_016032_2600, a color JP2 file. Latitude about 80 degrees north, in the polar dunes of Mars. Image taken from about 165-200 miles distance by telescopic camera. The dark upper left inner section of the dark gully spot has a darker 'leaf' shape within. That 'leaf' is about 38 feet in diameter, 32 feet long, with the circular core spot about 10 feet in diameter. These shapes appear along the dune crest and upslope in the dark gully-streaking formations commonly, and s few in the not dark slopes, at varying sizes. Dark 'fans' appear along the slopes and lower ground level materials which appear as two material types or more. The dark spots appear at regular intervals across the bright lower ground surface(far)left, out of view here, and the landscapes appears to be 'infected' as a rash like interval spacing. Araneiform , or Spider formations appear across both dunes and the flatter low ground surface, as radial arrayed 'starburst' and varied geometric patterned dark point sourced emergent diffusions/transformation domains. Elaborate mathematical alignments and interactions can be seen in many to each other and to the ground mass and dune layered masses. Actual 3D shaping, stems, ridged and depressed mounds and pits form at Araneiform active spots. Some conical vents are visible where eruptions occur. Some inactive formations are not dark. Transparent slabs of material flow from some, with the dark fans not adhering to the clear slabs, only the rippled or rougher ground surface. More. at www.marsroverblog.com/forum , ' danajohnson0 ' username sourced topics.