Tag Archives: volcano

Volcanoes and All That – Part 3

When the rock is blasted it forms nice columns, like these. The Giants Causeway in Northern Ireland have similar basalt columns, but in a seaside setting.

Kulnura Quarry

They are surprisingly heavy for their size, and are really hard rocks. These are crushed and used to make super concrete. This is the concrete for really big structures, like the World Square building and Anzac Bridge in Sydney.

We were allowed to take some home, and our columns sit happily in our garden at home.

Volcanoes and All That – Part 2

Looking at the walls of the quarry up close, you notice that the grooves lean this way and that, like someone has sketched it.

Kulnura Quarry

The grooves are formed when magma, coming out of the volcano, cools. Hubby the geologist says that the way the grooves lean point to the coolest point. Since the grooves on each layer point in different directions, it tells you that the volcano was active many, many times.

Kulnura Quarry

Close up, it looks very beautiful, like artwork.

Kulnura Quarry

The kids were pretty enthralled too.

Kulnura Quarry

Volcanoes and all that – Part 1

Looking at the landscape around Sydney now, it’s hard to believe that at one stage the area harboured some active volcanoes. The evidence may be hard to find now, but they are there.

Back to the geology excursion, the second half was a visit to Kulnura Quarry, in the tablelands of the Central Coast. The quarry produces basalt to be used in concrete and road base, and basalt (recalling all those high school science lessons) comes from volcanoes.

We could drive into the quarry. Here we are at the top of the hill.

Kulnura Quarry

We drive 160 metres down to the floor of the quarry.

Kulnura Quarry

And look back up to where we started.

Kulnura Quarry

That’s 50 years worth of digging – and they still haven’t hit the bottom. The manager said that there’s another 50 years’ worth of basalt underneath.

Rice Fields

Surrounding the village are the rice fields. The Balinese has self-sufficient when it comes to producing rice. A traditional Balinese family is allocated a plot in which to grow rice. The surplus either goes to the village or to the government.

Bali is also a volcanically active place. The northern part of the country is full of peaks above 1,000m, the highest being the 3,142m high Gunung Agung. We’ll visit a volcano later.

Keliki village

The God’s Must Be… – Part 1

I’m returning once again to Bali to view another temple. This one is quite different from the last. It’s not beside a lake but under a volcano…

Pura Besakih (Besakih Temple) sits under Gunung Agung (Mt Agung) – Bali’s highest peak (3,142m – almost 1km taller than Mt Kozzie) and also an active volcano! The volcano last erupted in 1963, and still belches smoke.

So why have they built this mega temple underneath a volcano? Because…

The Balinese believe that Mount Agung is a replica of Mount Meru, the central axis of the universe. One legend holds that the mountain is a fragment of Meru brought to Bali by the first Hindus
From Wiki

The temple is built on the side of the hill in terraces. This photo was taken at the bottom. Being Bali’s most important temple, it holds up to seventy festivals a year. The locals were in the midst of preparing for a new moon festival when I visited.

Besakih Temple