From 1966-1968, Mr. and Mrs. Mourer and the students from Faculties of Archeology burrowed Laang Spean, a cave located in Kilometi 38 village, Taktrieng commune, Rattanak Mondul district, Battambang province. Leroi Gourhan’s theories were carried out so that such above excavation could become scientific. More importantly, this above prehistoric site, has a depth of 1.4 meters, and as nine strata.
The carbon remainder of the upper strata in the above prehistoric site was analyzed so that we would know the dates of the following: The ceramics in the first level are 750 A.D; the third level, 2050 A.D; the fourth level, 4290 A.D. It was when Cambodia experienced the war that the late scientific excavation was carried out in 1969. The Hoa Binh Site-like stone industry was found in North Vietnam, and the rhinoceros bones were found amongst the other animal bones; particularly, the 3000 BC ceramic. Thus, it was evident that Cambodian utilized these ceramics 5000 years ago.