There exists meager proof for a Pleistocene human control of present-day Cambodia, which incorporates quartz and quartzite stone devices found in porches along the Mekong River, in Stung Treng and Kratié territories, and in Kampot Province, in spite of the fact that their dating is inconsistent. Some slight archeological confirmation indicates groups of seeker gatherers possessed the locale amid Holocene: the most antiquated archeological disclosure site in Cambodia is thought to be the surrender of L'aang Spean, in Battambang Province, which has a place with the Hoabinhian period. Unearthings in its lower layers delivered a progression of radiocarbon dates starting at 6000 BC. Upper layers in a similar site gave confirmation of move to Neolithic, containing the soonest dated pottery earthenware production in Cambodia.
Archeological records for the period amongst Holocene and Iron Age remain similarly constrained. An urgent occasion in Cambodian ancient times was the moderate infiltration of the main rice agriculturists from the north, which started in the late third thousand years BC. The most inquisitive ancient confirmation in Cambodia are the different "roundabout earthworks" found in the red soils close Memot and in the nearby locale of Vietnam in the last 1950s. Their capacity and age are still wrangled about, yet some of them potentially date from second thousand years BC.
Other ancient destinations of fairly questionable date are Samrong Sen (not a long way from the antiquated capital of Oudong), where the primary examinations started in 1875, andPhum Snay, in the northern region of Banteay Meanchey. A removal at Phum Snay uncovered 21 graves with iron weapons and cranial injury which could indicate clashes previously, conceivable with bigger urban areas in Angkor. Ancient antiques are frequently found amid mining exercises in Ratanakiri.
Iron was worked by around 500 BC, with supporting proof originating from the Khorat Plateau, in cutting edge Thailand. In Cambodia, some Iron Age settlements were found underneath Baksei Chamkrong and other Angkorian sanctuaries while roundabout earthworks were found underneath Lovea a couple of kilometers north-west of Angkor. Entombments, considerably wealthier than different sorts of discovers, vouch for development of nourishment accessibility and exchange (even on long separations: in the fourth century BC exchange relations with India were at that point opened) and the presence of a social structure and work association. Additionally, among the antiques from the Iron Age, glass dabs are essential confirmation. Various types of glass dots recouped from a few destinations crosswise over Cambodia, for example, the Phum Snay site in northwest and the Prohear site in southeast, demonstrate that there were two principle exchanging systems at the time. The two systems were isolated by time and space, which show that there was a move from one system to the next at about 2nd–4th century AD, likely with changes in socio-political forces.