largest amusement park in the southern hemisphere until its closure in 2004. In 2015, the Abbott government granted 12,000 extra humanitarian visas to persecuted Christians, largely the Assyrians, in the war-torn Middle Eastern countries, which were admitted to Australia as part of its one-off humanitarian intake, with half of them primarily settling in Fairfield and also Liverpool. Geography Topography The Greater Western Sydney region spans from Windsor in the north to Campbelltown in the south, Lidcombe and Roselands in the east, with the A3 creating the boundary between the greater west and inner West, to Penrith and the lower parts of the Blue Mountains in the far west. The 151st meridian east passes through the heart of western Sydney, namely in the suburbs of Castle Hill, Parramatta, Granville, and Revesby, with the suburbs west of those being on the eastern end of the 150th meridian, which is a line that passes through the Russian city of Magadan in the northern hemisphere. In 1820s, Peter Cunningham described the country west of Parramatta and Liverpool as "a fine timbered country, perfectly clear of bush, through which you might, generally speaking, drive a gig in all directions, without any impediment in the shape of rocks, scrubs, or close forest". This confirmed earlier accounts by Governor Arthur Phillip, who suggested that the trees were "growing at a distance of some twenty to forty feet from each other, and in general entirely free from brushwood..." Greater western Sydney predominantly lie on the Cumberland Plain and are relatively flat in contrast to the above regions. The region is situated on a rain shadow, thanks to the Hills District to the northeast, where they tend to be drier than the coast and less lush than the hilly Northern Suburbs. However, there are still a number of ridgy areas on the plain — Western Sydney Parklands, one of the largest parklands in the world, and Prospect Hill, the only area in Sydney with ancient volcanic activity, are between high. Highly elevated suburbs, which typically range between in height, include Leppington and Oran Park to the southwest, Pemulwuy, Cecil Hills and Horsley Park to the greater west, and Greystanes, Seven Hills and Mount Druitt to the northwest. Ecology The main plant communities in the Greater Western Sydney region are sclerophyll grassy woodlands (i.e. savannas), dry sclerophyll forests and small pockets of wet sclerophyll forests to the northeast as one