South Rim
Note the atmospheric effect reflected in the color of the shadows: black in the foreground, but already blue just past the first formation, whose true distance is difficult to judge, but may be a mile, or more.
Later: But note too the darker shadows on the right in the distance. I now think that the bluish shadows are a result of light being reflected into them (shadows) from the opposite, pale walls of the canyon.
South Rim
Note the atmospheric effect reflected in the color of the shadows: black in the foreground, but already blue just past the first formation, whose true distance is difficult to judge, but may be a mile, or more.
Later: But note too the darker shadows on the right in the distance. I now think that the bluish shadows are a result of light being reflected into them (shadows) from the opposite, pale walls of the canyon.