The Great Zig Zag Railway The Zig Zag is a full size, narrow gauge tourist railway located at Clarence, 10km east of Lithgow in the Blue Mountains of New South Wales, Australia. Built in the 1860s, the line was constructed to transport people and produce from the western plains of NSW to Sydney. It was replaced in 1910 by a 10 tunnel deviation. The trains, track and rollingstock are maintained and operated by the Zig Zag Railway Co-op Ltd, a voluntary, “not for profit’ co-operative. The Zig Zag Railway can be reached by road or by a NSW Trainlink Service. The Zig Zag Railway ran steam trains and rail motors between 1975 and 2012. We are working hard to re-open the railway to passengers in early 2017.