The back of Stela 4, showing the inscription, and the couple of stone monuments that stand in front of it. The inscription is somewhat obscure, as it involves possible ritual activities that are poorly understood, involving the taking or tying of a bundle and the taking of a black headdress. The square stone sitting in front of the stela was found buried under the stela's foundation as part of a dedication cache, while the oval-shaped stone in front of the square stone is thought to represent a tied rubber ball of the type used in the ballgame.