Different spots in the rural area of Leipzig and Berlin of no apparent use were chosen during night time to dig holes by hand and a small spade. Afterwards they would be filled up with concrete without employing materials that would divide the concrete from the soil and thereby giving them a defined shape. After the process of hardening the concrete shapes were dug out themselves and the remaining holes were filled up with the original soil again. However traces of the work that has taken place are still recognizable. After showing the concrete rocks at the Cluster gallery in Berlin they were moved to Kreuzbergpark and put into a water cascade.