Inland of Cairns in Queensland, Australia. Home to some of the most beautiful waterfalls in the world. Millaa Millaa Falls being the most popular, and also where many adverts have been filmed, including L'oreal. The water drops 18.3 metres before plunging into a pool suitable for swimming.
Waterfalls are formed when a band of resistant rock lies next to less resistant rock. In this case, volcanic basalt rock. As the river flows over the rocks, the less resistant rock erodes faster, leaving resistant rock elevated above the stream below. This continues to occur and a vertical drop is made. The erosion gradually undercuts the hard rock and eventually the resistant rock is unsupported and collapses. As the process continues, the waterfall retreats upstream. This can also cause a gorge to form. Abrasion and hydraulic action cause a plunge pool to form below the vertical drop. When the resistant rock collapses and falls into th plunge pool, it contributes to abrasion as the loose rocks are swirled around and thrown at the sides of the pool, enlarging it further.
Millaa Millaa Falls
Josephine Falls is well known for it's natural rock waterside.
Waterfalls are formed when a band of resistant rock lies next to less resistant rock. In this case, volcanic basalt rock. As the river flows over the rocks, the less resistant rock erodes faster, leaving resistant rock elevated above the stream below. This continues to occur and a vertical drop is made. The erosion gradually undercuts the hard rock and eventually the resistant rock is unsupported and collapses. As the process continues, the waterfall retreats upstream. This can also cause a gorge to form. Abrasion and hydraulic action cause a plunge pool to form below the vertical drop. When the resistant rock collapses and falls into th plunge pool, it contributes to abrasion as the loose rocks are swirled around and thrown at the sides of the pool, enlarging it further.
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