The Blue Mountains get their name from the natural blue haze created by vast eucalypt forests in this World Heritage area. Tiny droplets of oil released from the trees mix with water vapour and sunlight to produce the distinctive colour. Enjoy crisp mountain air, beautiful panoramas, charming villages, one of the world’s oldest cave systems, and exhilarating adventures in the Blue Mountains, near Sydney. You can even see dinosaur trees in the Blue Mountains Botanic Garden, Mount Tomah. This is a great Australian escape and a natural wonder of the world.