C17 934 leads newly restored AC16 218A (temporarily numbered 5921 for the day) and BB18 1/4 Class 1072 'City of Lithgow' up hill past Mount Sinai with a special triple-header from Bottom Points, bound for Clarence.
Zig Zag Railway is a heritage railway near Lithgow, NSW which was part of the Main Western line by-passed by ten tunnel deviation in 1910. Re-opened with 1067mm gauge in 1975, it has a switchback on 1 in 42 gradient, 2 tunnels and 3 stone arch viaducts.
