12_Johns_Computational Planning (IMAGE) ETH Zurich Caption Computational planning and stone placement using the autonomous excavator HEAP, Circularity Park in Oberglatt, Eberhard AG, 2021-2022. Credit © Gramazio Kohler Research, ETH Zurich, Eberhard AG. Photo: Ryan Luke Johns. Usage Restrictions For editorial use only. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.