Red chalk was a particularly useful drawing material because it could easily be manipulated to create a variety of different types of line. The outline of the horse and rider is quite dark and dense. The artist may have achieved this either by applying strong pressure to the chalk or by wetting it first. He then added minimal shading with parallel diagonal lines. These are lighter and softer than the outlines and were probably drawn with dry chalk applied with little pressure.
Gallery label, August 2004