Kiama was the site of two strong volcanic flows, called the Gerringong Volcanics, which came out of Saddleback Mountain, now a collapsed volcanic vent.
The Kiama Blowhole is part of an erosion process on the more recent rock, formed into columnar basalt, or latite.
Before the cedar-getters (comprising ex-convicts, convicts and runaways, some with cedar licences and many without) arrived in the area around 1810, the local Indigenous Australians, Wodi Wodi of the language group Dharawal, had been using the land for thousands of years, moving every six weeks or so in family groups.
This is supported by a midden of shells at nearby Bass Point used for more than 17,000 years.
During this time the whole coastal hills was covered in rainforest and cedar brush.
There is evidence of a flourishing culture with intricate possum cloaks, a developed song and story cycle, and a deep understanding of the many plants of the rainforest.
Only a few remnants of rainforest survive along the escarpment in places like the Minnamurra Rainforest Centre.

There is strong evidence of recent sea debris showing a mega-tsunami hit this coast around 1487 A.D according to Dr Ted Bryant of Wollongong University.
The first European to explore the area was George Bass who stopped there on 6 December 1797 and viewed Kiama's blowhole.

During the early settlement of eastern Australia, the Kiama area was settled by wheat farmers, since the soil was volcanic and rain-swept unlike most of Australia.
Early Jamberoo was the population centre from about 1830 to the 1860s and when the wheat failed to grow, the farmers switched to dairying.
During this period Kiama became the best example of 'chain migration' in Australia as many assisted migrants came from Northern Ireland on clearing leases and eventually half the marriages in the Kiama Anglican Church in a hundred years had Northern Irish Protestant ancestry.
Kiama was one of the birthplaces of the Australian dairy industry with the first Dairy Factory (The Kiama Pioneer Factory) and first Dairy Co-operative in Australia.
There were three original major land grants, Thomas Surfleet Kendall (son of lapsed missionary Reverend Thomas Kendall), Michael Hindmarsh and Matthew Cignarella, all of which married sisters of the Rutter family.
The Kendalls were cousins of Henry Kendall, the famous Australian poet.
The Kendall name is remembered today in several places such as the spooky Kendall Cemetery in Kiama Heights and Kendalls Beach.
The Hindmarshs are remembered in Kiama's main park, Hindmarsh Park, and after 10 generations still live on their original land.

Kiama's next population boom was powered by its quarries, which multiplied rapidly in the early years of the 20th century.
Many Irish Catholics worked in the Kiama quarries.
The basalt formed by two volcanic eruptions 240 million years and 66 million years ago was a valuable commodity for a growing colony, with the blue metal used to pave Sydney's roads and as ballast for its railways.
It was very similar to the basalt found in Northern Ireland, where the Giant's Causeway is a famous example.
There are still active quarries in the Kiama area, including the N.S.W. Railway Quarry, and the remnants of earlier quarries are easily visible throughout the town and often have facilities built inside them such as the Kiama Leisure Centre.
One particular quarry, the Bombo Headland, is of scientific importance as it is the site of the discovery of the longest known geomagnetic polarity interval called the Kiaman Reverse Superchron.

When Kiama Harbour was hollowed out after 17 years' work, and flooded in 1876, larger steamers such as from the Illawarra Steam Navigation Company could enter and a flourishing sea trade followed.
Staithes for loading crushed blue metal stone directly into ships from rail trucks were installed along the eastern end of the harbour, allowing regular shipments to be taken to Sydney for the railways and road construction.
The Kiama Pilot's Cottage was finished in 1881 and the Kiama Lighthouse in 1887.
Kiama really hit its boom time in this period, fro
Kiama was the site of two strong volcanic flows, called the Gerringong Volcanics, which came out of Saddleback Mountain, now a collapsed volcanic vent. The Kiama Blowhole is part of an erosion process on the more recent rock, formed into columnar basalt, or latite. Before the cedar-getters (comprising ex-convicts, convicts and runaways, some with cedar licences and many without) arrived in the area around 1810, the local Indigenous Australians, Wodi Wodi of the language group Dharawal, had been using the land for thousands of years, moving every six weeks or so in family groups. This is supported by a midden of shells at nearby Bass Point used for more than 17,000 years. During this time the whole coastal hills was covered in rainforest and cedar brush. There is evidence of a flourishing culture with intricate possum cloaks, a developed song and story cycle, and a deep understanding of the many plants of the rainforest. Only a few remnants of rainforest survive along the escarpment in places like the Minnamurra Rainforest Centre.
There is strong evidence of recent sea debris showing a mega-tsunami hit this coast around 1487 A.D according to Dr Ted Bryant of Wollongong University. The first European to explore the area was George Bass who stopped there on 6 December 1797 and viewed Kiama's blowhole.
During the early settlement of eastern Australia, the Kiama area was settled by wheat farmers, since the soil was volcanic and rain-swept unlike most of Australia. Early Jamberoo was the population centre from about 1830 to the 1860s and when the wheat failed to grow, the farmers switched to dairying. During this period Kiama became the best example of 'chain migration' in Australia as many assisted migrants came from Northern Ireland on clearing leases and eventually half the marriages in the Kiama Anglican Church in a hundred years had Northern Irish Protestant ancestry. Kiama was one of the birthplaces of the Australian dairy industry with the first Dairy Factory (The Kiama Pioneer Factory) and first Dairy Co-operative in Australia. There were three original major land grants, Thomas Surfleet Kendall (son of lapsed missionary Reverend Thomas Kendall), Michael Hindmarsh and Matthew Cignarella, all of which married sisters of the Rutter family. The Kendalls were cousins of Henry Kendall, the famous Australian poet. The Kendall name is remembered today in several places such as the spooky Kendall Cemetery in Kiama Heights and Kendalls Beach. The Hindmarshs are remembered in Kiama's main park, Hindmarsh Park, and after 10 generations still live on their original land.
Kiama's next population boom was powered by its quarries, which multiplied rapidly in the early years of the 20th century. Many Irish Catholics worked in the Kiama quarries. The basalt formed by two volcanic eruptions 240 million years and 66 million years ago was a valuable commodity for a growing colony, with the blue metal used to pave Sydney's roads and as ballast for its railways. It was very similar to the basalt found in Northern Ireland, where the Giant's Causeway is a famous example. There are still active quarries in the Kiama area, including the N.S.W. Railway Quarry, and the remnants of earlier quarries are easily visible throughout the town and often have facilities built inside them such as the Kiama Leisure Centre. One particular quarry, the Bombo Headland, is of scientific importance as it is the site of the discovery of the longest known geomagnetic polarity interval called the Kiaman Reverse Superchron.
When Kiama Harbour was hollowed out after 17 years' work, and flooded in 1876, larger steamers such as from the Illawarra Steam Navigation Company could enter and a flourishing sea trade followed. Staithes for loading crushed blue metal stone directly into ships from rail trucks were installed along the eastern end of the harbour, allowing regular shipments to be taken to Sydney for the railways and road construction. The Kiama Pilot's Cottage was finished in 1881 and the Kiama Lighthouse in 1887. Kiama really hit its boom time in this period, fro
Kiama, New South Wales