In the Sachsenhausen concentration camp, prisoners were punished by having their hands tied behind their back, and then being suspended on a pole with their feet just above the ground for half an hour. This was also systematically used in Dachau Concentration Camp for infringement of camp rules. Originally the punishment used tree branches, but it was moved into a shower room on special poles so that victims could not relieve the pain as they could by using the tree. Holocaust survivor Jean Améry writes of his own experiences of strappado when being tortured at the Nazi concentration camp of Fort Breendonk in occupied Belgium. Améry's analytical descriptions of the torture were included in a number of works by the writer W. G. Sebald (notably the novel "Austerlitz").