This paper presents the findings from 2019-2022 archaeological rescue excavations at four sites which were being severely damaged through ploughing: Khok Tabaek and Ban Among in Mueang Surin District, and Ban Yang and Ban Ta Phrom in Si Khoraphum District. The projects consisted collecting survey finds and excavation of trenches of various sizes at the different sites, Khok Tabaek (3x3 m), Ban Among (10x40 m), Ban Ta Phrom (1x2 m), and Ban Yang (4x4 m). Finds from the trenches were classified and typologically grouped. The analysis of the skeletal remains recovered was supervised by experts in human osteoarchaeology. The more than 20 jar-burials were recovered from the four sites were remarkably similar in the modes of secondary burial tradition employed. Material culture comprised a tiny pot, carnelian bead(s) and bronze bracelet. The outcomes of the archaeological studies on the four sites add important new insights for our understanding of the pattern of mortuary practice and prehistoric traditions in northeastern Thailand. The results are consistent with previous findings in other areas, which could be dated to approximately 2500 - 1500 BP. Further archaeological research in this area should be undertaken in the future to provide more detailed interpretations of the prehistory.