The symmetry of the Rotunda's two walls offers the visitor perfect visual continuity, particularly that of the frieze of the great bulls.
The right-hand wall features a number of painted or drawn images, including 3 horses, 5 aurochs, 1 stag, 1 bear and 22 signs, as well as undetermined figures.
The third bull takes up part of the ceiling that opens onto the Axial Gallery, and its rear members touch the entrance. Its position provides a link between the start of the Axial Gallery and that of the Passageway further on. The hindquarters are not depicted, perhaps so as not to cover over the fourth bull, which follows it. The figure can be compared to the three other representations of bulls – hides depicted with a series of dots, a double line at the level of the lower jaw, etc. There are also technical similarities: the use of sprayed pigment for the upper part of the animal and a swab or brush to paint the lower parts. Scraping was also used to distinguish the joint of the right forelimb from the body of black horse already present. What sets this bull apart is the exaggerated elongation of its forelimbs, an anamorphic technique that was necessary to maintain its dimensions