English: Hex River Tunnel 4, Western Portal. Tunnel 4 is 13,7 Km long. The four-tunnel system eliminated the Hex River Railpass that was the reason why Standard Gauge (4' 8½") was replaced by Cape Standard (3' 6") in the 1870s. Location: Hex River Valley, De Doorns, Western Cape
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== Summary == {{Information |Description={{en|1=Hex River Tunnel 4, Western Portal }} |Source={{own}} |Author=Col André Kritzinger |Date=2005-08-13 |Permission= |other_versions= }} '''Location:''' Hex River Valley, De Doorns, We