Australia is the second driest continent in the world, and while some areas benefit from having a mountain range in close proximity that causes heavy precipitation to occur (Tully in Queensland has an average annual rainfall in excess of four metres), other parts of the country that are in the interior experience far less rainfall all the time.

The driest town is Coober Pedy, which has an average of just 159.1 mm (6.26 inches) per annum.

Coober Pedy is in northern South Australia, 846 km (526 mi) north of Adelaide on the Stuart Highway.

In the 2016 Census, there were 1,762 people in Coober Pedy, and despite living in one of the hottest parts of the country and having such a dry climate, the locals have adapted ingeniously to their conditions.

In a bid to avoid the heat, much of the town has been built underground, and visitors can see underground houses, cafés and churches, and even stay in underground hotels there, testimony to the innovative locals who call Coober Pedy 'home'.

The details for the other answer options are -

Kalgoorlie, W.A. - 268.4 mm (10.56 inches)

Tibooburra, N.S.W. - 227.9 mm (8.97 inches)

Boulia, Qld - 264.3 mm per year (10.40 inches)

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