Why are the Blue Mountains blue?
Blackheath Travel Blog› entry 8 of 9 › view all entries
Lord Rayleigh was the first person to explain why the sky is blue.
How blue exactly, are the Blue Mountains? It depends on where you are. In Glenbrook you might feel a bit jibbed, but at Echo Point and Govett's Leap Lookout, the mountains are certainly blue.
The mountains and valleys are smothered in a blue haze that is produced by an effect called Rayleigh Scattering (yes, named after that guy I mentioned earlier). It's explanation of the blue haze is that the suns rays fall on dust particles and moisture in the air and so produce the colour blue. In the Blue Mountains, the abundance of eucalypts mean there are also droplets of oil, and this, apparently intensifies the effect. Hence the name, the Blue Mountains.
Echo Point, the Three Sisters, Jamison Valley, Govett's Leap Lookout and Grose Valley are the main things people come here to see.
They must have been really tall humans, because when walked over to them, we discovered just how tall the rocks they really are.
We drove as far into the valley as we thought we were allowed to, through some private properties and up to the edge of the wilderness and camped on a hill with a stunning view of the valleys. We were the only ones there and it was fabulous. Roos came in the evening to munch on grass around us and the sky turned pink over the highest mountains. The night was dewy but pristine under the night blanket and twinkling stars.