| Abstract: |
The paper contains present and planned research on the place of prehistory in the sum of Angkor's chronological horizons. The emphasis is on the habitation over time of preferred locales and the fluctuation between adaptation and the alteration of the plain's rivers. The work is based on a sample of 66 mounds bordering the water courses of the Siem Reap plain. The research began with a search for probable prehistoric habitation places, sites which it was hypothesized should yield prehistoric artifacts. Initial ground survey provided confirmation in the form of pottery sherds and a range of stone tools. Hydrological modifications affecting the city of Angkor begin to explain the present day absence of water in areas of obvious prehistoric habitation - particularly in the Lovea and Siem Reap groups. Changes in water management may also clarify the better preservation of earthworks at the site of Lovea, and the presence of earthworks at some of the other mounds is raised. The latitude, longitude, elevation, and mound diameter are described for the site groups, and correlations between these attributes.
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