Curiosity doesn't seem to be having any difficulty on her way downslope. As for the surface, if it wasn't desert pavement before it is now. If you are interested in the directions of the anaglyphs, the field of view of the Navcams is 45° and the angle of view is stepped by 30° for each image so that there will be some overlap of the images. The dome-like peak in the near background of the second anaglyph had a heading of 61° from Bradbury Landing and probably hasn't changed much from that since then. The raw images need to be corrected for vignetting which is caused by the optics and made worst by the contrast enhancement. There is probably some glare caused by reflected sunlight in addition in some of the images.