The Knapsack Viaduct is a sandstone arch viaduct, designed by John Whitton and built by William Watkins. Its purpose was to carry the Main Western railway line across Knapsack Gully. It formed part of

Emu Plains is a suburb of Sydney in the state of New South Wales, Australia. It is 58 kilometres west of the Sydney central business district, in the local government area of the City of Penrith and i