Hieroglyphic Stairway 1 was located on the front of Structure A-14.Ponciano et al 2007, p.451. The stairway was installed by king Ucha'an K'in B'alam of Dos Pilas to record Seibal's status as a vassal after its defeat by that city. The stones are no longer in situ, having been removed to the area of the camp of the old archaeological project.Schele & Mathews 1999, pp.177-178.
