Der Tunnel

I've seen two of the three language versions of Bernhard Kellermann novel released in the 1930s, but this was the ambitious silent adaptation done nearly 20 years earlier. And I must say, this was the most impressive. Relies a little too much on the disastrous tunnel malfunctions, but there's a lot of effort put into those images, so while the story lacked a sympathetic face, the gimmickry of the story shines through.