Among the most isolated of the world’s administrative centres, Perth is closer in distance and time zone to Jakarta and Singapore than to Sydney. The coastline is rugged and dangerous, with strong currents and a tidal range that may reach 39 feet (12 metres), while the rolling inland areas are sparsely wooded and scattered with bristly grasses.
The limestone King Leopold Ranges rise from the southern part of the region.
Indeed, inland drainage is characteristic of most of Western Australia, and the great majority of the lakes shown on any map of the state are saline playas (dried-up lake beds), not bodies of fresh water (except after major rainfall events).
The dry, rough country lying to the south of the Pilbara is drained by the Gascoyne River.
It is bounded to the east by the flat, waterless, treeless, marine limestone of the Nullarbor Plain, which terminates at the Southern Ocean in an unbroken line of spectacular coastal cliffs.
To the west, the scarp of the Darling Range runs north-south for some 200 miles (320 km), separating the Yilgarn block from the coastal plain of the Perth Basin.
Pilbara region, a rugged, arid landscape of ancient folded and uplifted rocks.
At the so-called North Pole are some of the world’s oldest fossil stromatolites (constructed of algae and limestone), dating to about 3.5 billion years ago.
The state is bounded to the north by the Timor Sea, to the northwest and west by the Indian Ocean, and to the south by the portion of the Indian Ocean commonly called the Southern Ocean (or Antarctic Ocean) in Australia.Most of the state is subarid, and the combination of low rainfall and high temperatures restricts most of the population and agricultural activities to the so-called comfortable zone southwest of an imaginary line stretching from north of Geraldton on the state’s western coast to Esperance on its southern coast.The overwhelming majority of the population lives in the greater Perth area, which is one of the largest metropolitan regions in Australia. Kimberley region in the far north is a multisectioned plateau.Usually dry, these rivers become raging torrents during the cyclone season.To the east of the Pilbara flows the Rudall River, which drains inland to the saline (and usually dry) Lake Dora.