Langsgrachten along numbered roads managed by AWV

Langsgrachten are depicted along the numbered roads. In other words, the date layer indicates the (part of) the numbered road along which longitudinal graves are located.纵向墓葬（Langsgrachten）被标注于编号道路沿线。换言之，日期图层（date layer）所指示的，即为纵向墓葬所在的编号道路的（部分）路段。