Wallace Line by the Sahul Shelf to New Guinea. The biogeographic boundary known as Lydekker's Line, which separates the eastern edge of Wallacea from the Australian region, has a similar origin to the Wallace line. During ice age glacial advances, when the , both Asia and Australia were united with what are now islands on their respective continental shelves as continuous land masses, but the deep water between those two large continental shelf areas was, for over 50 million years, a barrier that kept the flora and fauna of Australia separated from those of Asia. Wallacea consists of islands that were not
Belfast–Newry line with a passenger foot crossing adjacent at Sunnymede Park. After passing over the Kingsway, Derriaghy halt is reached, and shortly thereafter, Lambeg and, the final intermediate halt on this section, Hilden. Entering Lisburn city proper, the line skirts Wallace Park before arriving at Lisburn railway station itself. A small yard exists at Lisburn station, typically used by permanent way vehicles and, until recently, the storage of redundant stock. Lisburn is also the junction for the single-track Antrim branch, which runs adjacent to the double-track Newry line through the Lisburn suburbs, creating the illusion of triple-track. These lines pass under Thiepval