For a panoramic view of the Glass House Mountains, north of Brisbane, the lookout on the escarpment of the Beerburrum State Forest is hard to beat. Quality interpretive signs by the Queensland Parks and Wildlife Services tell tourists what they are looking at. Those who made the signs as well as those who read them would not be aware of the subtle bias they present, and how they affect people’s perception of the world. Consider this extract:

 The Glass House Mountains were once lava plugs within volcanic cones. The volcanic cones and surrounding Landsborough sandstone were eroded by wind and water over 25 million years to reveal the lava plugs which you can see today.

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