"Above the cornice of the building rises a gigantic perpendicular wall to the height of thirty feet, once ornamented from top to bottom with colossal figures and other designs in stucco, now broken and in fragments, but still presenting a curious and extraordinary appearance. Along the top, standing out on the wall, was a row of death's heads; over the centre doorway, constituting the principal ornament of the wall, was a colossal figure seated...Conspicuous over the head of this principal figure is a large ball, with a human figure standing up beside it, touching it with his hands, and another below it with one knee on the ground, and one hand thrown up as if in the effort to support the ball, or in the apprehension of its falling upon him."
http://mayaruins.com/labna/y1_110.html
