- These were quite a unique feature here, which I've not so far encountered in any other place in this quantity. Piles of small rocks are lying everywhere, left from the construction workers, who mined the trenches into the solid rock.  

- A small piece of the trench, which is just this small piece and nothing else. Still, like I mentioned, the details are nicely visible. The erosion has damaged a bit of those planes, which would have enabled you to quickly climb "over the top"