Autonomous excavator constructs a six-metre-high dry-stone wall

Researchers from ETH Zurich have created an autonomous excavator named HEAP that can build a six-meter-high and sixty-five-meter-long dry-stone wall. The excavator uses sensors to map the construction site and locate building blocks and stones, and then uses specially designed tools to scan, grab, and place the stones in the desired location. The project was developed as part of the National Centre of Competence in Research for Digital Fabrication.