and engineers to stay west of the Flinders Ranges, giving priority instead to servicing promising copper prospects and expected agricultural wealth in the locality. This source of decades of operational nuisance and expense had become, in the lines old age, the source of enjoyment for travellers, as locomotives worked hard to ascend the grades. The headquarters of the PRRPS is at the Quorn railway station, where restoration and repair work continues to be undertaken by volunteers at the locomotive depot. Trains operate through the Pichi Richi Pass to Woolshed Flat and Port Augusta, and out of Port Augusta to Quorn. The volunteer organisation has fully restored a fleet of South Australian Railways (SAR), Commonwealth Railways (CR) and Western Australian Government Railways (WAGR) steam and diesel locomotives, passenger and freight rolling stock. Pichi Richi (1974) (elevation ), Woolshed Flat (1979) (elevation ) and Stirling North (1999) on the original alignment, and to Port Augusta (2001) on a new alignment between Stirling North and Port Augusta. Pichi Richi is the name of the pass through which the railway travels and is also the name of the former township located in the Pass, after which the Society is named. The name Pichi Richi is believed to come from the region being a traditional centre in the production of pituri, a mixture of leaves and ash chewed as a stimulant by the First Nations people in Australia. Current operations PRRPS continues to expand the type and number of services as more rolling stock and track is restored and rehabilitated. The Afghan Express is a return trip to Quorn from Port Augusta (78 kilometres return). This train usually consists of Ghan carriages from the 1920s and is often hauled, wherever possible, by an original Ghan steam locomotive, NM25, and recreates the type of travel experienced on the Ghan in the 1930s and 1940s. A shorter journey, the Pichi Richi Explorer is a return service to Woolshed Flat departing from Quorn (32 kilometres return). Travel on this train is either in South Australian Railway carriages circa 1900 to 1915 hauled by a steam locomotive, or in a 1928 SAR diesel railcar. The use of older SAR rolling stock on this train replicates what it was like to travel by country rail in South Australia in the very early 1900s to the 1960s. Much of this rolling stock was in service until the end of narrow gauge