In the last week, we have travelled east from Three Ways
Junction (just north of the Devil’s Marbles) to Charter’s Towers on the Barkly
Highway. It has been a journey of discovery for both of us. The highlights have
included camping at Porcupine Gorge, discovering Australia’s Dinosaur trail via
Richmond and Hughendon where marine and terrestrial dinosaurs once roamed,
learning a little more about our inland sea, and visiting my friend Megs, at
Charter’s Towers.
Many of the areas along the Barkly Highway have been in
drought for 3 years. If you live along the coasts of Australia, it is hard to
comprehend what 3 years of drought can do to a landscape. Cattle stations, some
of which might be the size of a small European country have been abandoned.
Many people have committed suicide because they are unable to service the huge
debts that have accumulated. So, it is quite ironic that the secrets that are
being unearthed around these parts and the amazing geological formations to be
found here are all caused by a great inland sea that covered much of Australia.
We are really amazed to learn that thousands of dinosaur
fossils have been discovered in these parts and that many fossils still lie
buried here. In Richmond, we marvel at the Pliosaur, a carnivorous, marine
reptile that has been unearthed by a local grazier, in the late 80’s. It was perfectly preserved and the best
example of such a specimen in the world, and yet it lies tucked away in this
little museum in Richmond, with many travellers only learning about its
existence when they travel this highway.
It’s hard to imagine that species as dominant and widespread
as the dinosaurs could eventually become extinct and the museum discusses the
possible causes of extinction. They argue that a single
event such as a meteor
hitting the earth is unlikely to be the sole reason. Other events such as the
rise of flowering plants and insects would have reduced the diet of the plant
eaters, causing a fall in their population and therefore reducing available
food for meat eaters. Volcanic eruptions may also have warmed the planet
causing changes in sea levels and consequent changes in local climates as was
the case in central Australia. We are both quite amazed to see the map
indicating the extent of the inland sea and we wonder if it is too far fetched
to imagine a new inland sea if sea levels rise again.
Curious about this, I’ve asked Dr Google for the answer.
According to maps published by National Geographic and an article in the Sydney
Morning Herald, Australia will get an inland sea if global warming continues
and melts the world's ice caps and glaciers, lifting sea levels about 70
metres. This could take about 5,000 years and according to Dr Neville Nicholls,
a climate expert at Monash University, scientists have known for decades that
the upper end of sea-level rises from melting ice would be around the 70 metre
mark. Of course for those of us living in places like Sydney, it is the first
metre that’s predicted for the end of this century that is a worry!
Charter’s Towers is the last major town on the Barkly
Highway, before we hit the coast. I’m excited to catch up with my friend Megs,
who I first met 5 years ago when we both volunteered on a Conservation &
Photography project in South Africa and shared a room for 4 weeks. We haven’t
met since. We spend a day with Megs and Mick (see last 5 photos) on their
lovely heritage home at Charters and Megs takes us to Dalrymple Park, where we
both have fun with our telephoto lenses.
It’s almost time to hit the coast and head back to Sydney
for our various commitments in October. We’ve learnt lots driving the Barkly
Highway and wander why it’s treasures are not more widely talked about.
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