For those that can read German, here is a little article that explains some of the obstacles over time: https://www.derstandard.at/story/3000000299789/traum-vo

For those that can read German, here is a little article that explains some of the obstacles over time: https://www.derstandard.at/story/3000000299789/traum-vom-sueden-wie-der-koralmtunnel-nach-34-jahren-wirklichkeit-wurde https://www.derstandard.at/story/3000000299789/traum-vom-sue...