Blue Mountains NP, New South Wales,
Australia
The Blue Mountains, just west of Sydney, are a beautiful
national park that were once a very major barrier to westward expansion.
For many years the mountains were impassable. They are called the
Blue Mountains because of the oils that hang in the air from the eucalyptus
trees that carpet the mountains and valley. Nowadays, not only can
you drive and fly over the mountains, you can take cable cars across and
trams down into them.
