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Three Sisters.
The Three Sisters are sandstone rock formations in the Blue Mountains, NSW, Australia.
The Blue Mountains are so named because, from Sydney, they look blue. They are clad in vast forests of eucalypts (commonly called gum trees), which in the hot sun discharge a fine mist of eucalyptus oil from their leaves. The mist refracts light, which makes the haze look blue at a distance.
Three Sisters.
The Three Sisters are sandstone rock formations in the Blue Mountains, NSW, Australia.
The Blue Mountains are so named because, from Sydney, they look blue. They are clad in vast forests of eucalypts (commonly called gum trees), which in the hot sun discharge a fine mist of eucalyptus oil from their leaves. The mist refracts light, which makes the haze look blue at a distance.