Overview
- PLOS One published the study detailing a centimeter-scale 3D reconstruction of Rano Raraku, with an interactive version now available online.
- Researchers used 11,686 drone photographs and Structure-from-Motion photogrammetry to document every slope, carved surface and production feature.
- Analysis identified roughly 30 independent workshop zones and cataloged 426 moai, 341 extraction trenches and 133 removal voids.
- Measurements of 62 statues along ancient roads and prior replica trials support upright 'walking' transport rather than horizontal hauling.
- The study attributes long-term forest loss to introduced Polynesian rats suppressing tree regeneration in concert with human land clearing, as some locals voice concerns about how open mapping could influence tourism.