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Numerous contours that are close together indicate hilly or mountainous terrain; and when far apart, they represent a gentler slope. The contours were derived from LiDAR (Light Detection and Ranging) data that was captured in 3 blocks in the years 2018 to 2019. The LiDAR point cloud has a density of 2 to 3 points per square metre at a vertical accuracy of 0.1m (95%). The contours are derived through bipolar interpolation from the 5m TIN model. 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