Figure 7
From: Hypsometric changes in urban areas resulting from multiple years of mining activity

Changes in Bytom’s relief intensity in the nineteenth and twentieth centuries: A—changes in relative elevation from the late nineteenth century to the late twentieth century; B—variation in relative elevation in the late nineteenth century; C—variation in relative elevation in the late twentieth century; 1—city boundary; 2—magnitude of change in relative elevation from the late nineteenth century to the late twentieth century; 3—variation in relative elevation from the late nineteenth century to the late twentieth century.