Occurring mostly in autumn and spring, this is the time you are most likely to see the mysterious phenomenon of the Phantom Falls. For the “falls” to appear, the weather conditions have to be exactly right. There needs to be lots of moisture in the air so rain the preceding day is an advantage.
This natural event is caused by the air in the Jamison Valley being warmed by the sun’s rays and rising to meet the colder air in the Megalong Valley. The resulting mist creates a ‘waterfall’ effect which falls slowly and dramatically over the cliff into the Jamison Valley. The curtain of moving mist can be as much as 800 metres wide and 50 metres deep, and move at around 10 — 20 metres per second. The Phantom Falls can run for a few hours or a few minutes depending on the supply of moist air. Sometimes at night, they can run backwards flowing into the Megalong Valley, a spectacular sight under a full moon.