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Red Cliff on the north side of Vera Rubin ridge, within Pettegrove Point bedrock exhibits both bright red and dark gray patches with sharp boundaries. (a) R0 Mastcam mosaic mcam10769 from Sol 2,038 in white‐balanced RGB Bayer filters. Illumination from left. (b) Mastcam spectra, averaged within one ROI, stacked for clarity, and shown with error bars indicating one standard deviation. (c–e) Enhanced‐color stretch of image in (a). White outlines indicate ROIs.
