If I knew I forgot. But the geometry looks about right for that. You know how railfans are, get a few pix but disappear before the real work starts. But I do seem to remember the railroad crew was willing to go get the good rod off the park engine, replace it, and try to get us on our way. But we had been at it for a week, and had a long bus ride ahead of us to Bariloche over dirt roads, so Bernd Seiler the tour operator probably wisely decided that the better course was to get an earlier start on the road, and avoid a midnight or later hotel arrival.
JBWX