The document discusses the cultural landscape of Chiang Mai moat in Thailand. It describes how the moat was established in 1296 based on Hindu scripture and formed a square shape around the old city of Chiang Mai. Originally the moat served to protect the city, provide water, and was important spiritually and for fisheries. Today it remains significant culturally as a recreation area and its water is used in festivals, while policies aim to conserve its integrity and address threats from urbanization, water quality, and tourism.