Here's a 3D schematic of what an Erdstall would look like: https://web.archive.org/web/20151217104816/http://erdstall.de/wp-content/uploads/2014/06/modell.jpg

Here's a 3D schematic of what an Erdstall would look like: https://web.archive.org/web/20151217104816/http://erdstall.de/wp-content/uploads/2014/06/modell.jpg https://web.archive.org/web/20151217104816/http://erdstall.d... orange: entrance yellow: shaft used during construction, later filled up