After the German advance was stopped at the First Battle of the Marne in September 1914, the race to the sea (and also to the swiss border) began with both sides trying to take as much ground as they could.
So what did the end of the Western Front look like next to the Swiss border? I have found details and images of the northern end of the line in Nieuwpoort Belgium but can't help wondering what it might have looked like with an armed neutral country (Switzerland) in the way.