At the zenith of the Angkorean civilization the Khmers built two enormous reservoirs to manage their sophisticated irrigation system. One of these, the West Baray, near the Siem Reap airport is about the size of New York's Central Park. In 1960 the United States paid for the reconstruction of the Baray and the accompanying irrigation control system. Henry and Betty Bachrach were present when Prince Sihanouk and US Ambassador William Cattell Trimble dedicated this reconstruction project. This is their film of the ceremony.