The bench has a 47 cm high cant in which there are figures representing skulls, monkeys, hearts and circles, whose polychrome is basically composed of red, blue, yellow and black tones, the latter being the background color on which all these decorative elements are found, which in turn are delimited in their upper and lower sectors by black lines arranged as cords.

The altar has the form of a trapezoidal prism and presents in its east, west and south sides polychrome designs among which eight “Xiuhcoatl” or fire serpents can be distinguished, in descending position and supported on red stripes that can be associated with jets of blood. All these designs are on black and white circles and stripes. The most important scene is in the middle section of the south side where an area is framed by bloody flint knives and in the center a large animated brazier on which lies the god “Black flint knife” which is an invocation of Tezcatlipoca. Above the image of the god there is a dart and a flag that are symbols of sacrifice.