Answer:
It seems that the writer uses vivid descriptions and comparisons to highlight the unique and unfamiliar nature of Coober Pedy. The use of the Martian movie set analogy and the portrayal of the town as out of touch and possibly empty contribute to the idea that it's a place that stands apart from the norm. The writer's implication of not wanting to stay there and their perception of the town and its people as strange indicates a sense of discomfort or unease with the environment.