Burial mounds are widely scattered across the Tongatapu landscape. When you land at Fua’amotu airport, they line the runway. When you drive into Nuku’alofa, they can be seen to either side of the road. All but a few are without name, and the individuals buried within are long lost to history. Yet these mounds represent a story that literally is inscribed on the landscape. Using airborne LiDAR data, a computer application was developed to count the mounds. The total was astounding, including upwards of 10,000 of these sites on Tongatapu - about 40 mounds for every square kilometre. By Travis Freeland and David V. Burley.