NO ONE KNOWS

We left Geraldton and headed south towards Perth in Western Australia.

Pt Denison.

We stopped at Port Denison for morning tea. It was showery and cold. I found a seat but wished that I was 60 years younger.

It was the last day of our "Western Wildflower Wonderland Tour" so we got together for a group photo. They were a great crowd to travel with. Everyone was friendly and helpful.

Before arriving in Perth we had lunch at the town of Cervantes. Then we were taken to Nambung National Park to see The Pinnacles . They are limestone spires, which were created millions of years ago. Wind and rain erosion has exposed the Pinnacles from under the golden, quartz, sand dunes. No one knows how they were formed.

However, there are theories. The favoured one is that plants played a role in the creation of the Pinnacles. Minerals are drawn from the sand to the roots. There is a lot of calcium derived from shells. An excess of calcium builds up over the plant and turns into calcrete. When the plant dies the cavities are also filled with carbonate material.

One of my tour buddies and I did the 2.5 k walk around the desert and up to the lookout. The structure's shapes and sizes were fascinating. 

 Cars are allowed to drive around but they must stay on the designated tracks. We walked up the hill in the background to the lookout.

The view was like out of a science fiction movie. We were lucky that the rain held off.

Then we headed back to the bus for the last time. It wasn't easy trying to find the markers that led us out of the desert. Soon we were in Perth and at the end of this tour.