Digital Elevation Model "Ville" from 1893

The area of the Ville in western Germany is of particular importance for studying anthropogenic induced relief changes, as it belongs to the largest and oldest historic lignite...德国西部的维尔（Ville）地区对于人为诱发地貌变化的研究具有特殊重要性，因其属于规模最大且历史最悠久的褐煤（lignite）……