File:Kollett m1873 fortifikationen.png
![File:Kollett m1873 fortifikationen.png](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Kollett_m1873_fortifikationen.png/334px-Kollett_m1873_fortifikationen.png?20170519172444)
Size of this preview: 334 × 599 pixels. Other resolutions: 134 × 240 pixels | 267 × 480 pixels | 428 × 768 pixels | 570 × 1,024 pixels | 1,712 × 3,072 pixels.
Original file (1,712 × 3,072 pixels, file size: 823 KB, MIME type: image/png)