The anaglyph image was calculated from the nadir channel and one stereo channel.
Though it may have been impressive at the time, early anaglyph imaging suffered from many issues.
British Dictionary definitions for anaglyph
(photog) a stereoscopic picture consisting of two images of the same object, taken from slightly different angles, in two complementary colours, usually red and cyan (green-blue). When viewed through spectacles having one red and one cyan lens, the images merge to produce a stereoscopic sensation
anything cut to stand in low relief, such as a cameo