Raymond has it close enough. Location is near Wellcamp on the original line from Toowoomba to Hendon opened in 1879. The Drayton deviation opened in 1915 allowed traffic to head directly south from Toowoomba to Warwick and beyond rather than the original route which took trains west to Gowrie Junction then south through Wellcamp, Westbrook and Wyreema.
Ironically, the location from which the photograph taken was immediately opposite the QRN (Aurizon) freight depot in Heinemann Rd.
Over to Raymond.