This bull, located immediately to the rear of the third bull, is the most imposing work of parietal art ever discovered: from the tip of its horns to the tail it measures 5.6 metres long.
All of the usual anatomical details are present, some of which have been remarkably rendered, particularly the head – the highlighting of the eye by an orbital arc, the double line at the lower jaw, the start of the dewlap, the generous horns and the poll. Various techniques were used to create the outline, which is all in black. Pigments were sprayed to create the lower parts, and a brush was used on the upper areas, either to create a continuous line or a series of juxtaposed dots. This is a reflection of the difficulties encountered during the creation process, in particular problems of access.
The hindquarters have suffered significant corrosion caused by air exchanges with the entrance to the Passageway.
Few figures are associated with this representation. The presence of a cluster of dots over the withers is to be noted, as is a star-shaped figure in front of the nose.