Complex sentence: The station would have been located south of the Lahn and west of the existing station and above the Lahn Valley Railway, trains on the existing line from Wetzlar would have connected to services to Cologne and trains from Niederlahnstein would have connected to services towards Frankfurt.
Split into simpler sentences: The station would have been located south of the Lahn and west of the existing station and above the Lahn Valley Railway. Trains on the existing line from Wetzlar would have connected to services to Cologne and trains from Niederlahnstein would have connected to services towards Frankfurt.