In front of the Prasat Phra That Dum temple, a "holy water basin," or stone basin, is placed in the center, used to hold sacred water in religious ceremonies. It is flanked by ancient sandstone "sema" (boundary markers) carved on lotus-shaped bases. These are believed to be markers defining the sacred boundaries of a later Buddhist site that overlapped with the original Khmer temple area, clearly reflecting the blending of ancient Khmer and local Buddhist beliefs.