Sol 4956, January 2, 2018. A blocky rock dubbed Pasaje shows a surface texture heavily eroded by wind-blown dust and sand to the point of looking layered. Yet at the same time, part of it appears pitted, resembling vesicular basalt. (The smaller companion rock at left appears much the same.)
This false-color Pancam image was made by Holger Isenberg; click it to enlarge it.