Travel Journal:

Perth Jan2007


Introduction 2007-01-23 to 2007-01-28
 
Forgot to mention this to you last night - I knew I was right!!!

Subject: re: pinnacles

told you they were limestone
Pinnacles
The Pinnacles are two-hundred and forty-five kilometres north of Perth
on the way to Geraldton. Closest main town is Cervantes. The Pinnacles
are seventeen kilometres south east of the town.

The Pinnacles are limestone formations. The raw material for the
limestone of the Pinnacles came from seashells in an earlier epoch rich
in marine life. These shells were broken down into lime rich sands which
were carried inland to form high mobile dunes. The Pinnacles were formed
from lime leaching from the sand and by rain cementing the lower levels
of the dune into a soft limestone. Vegitation forms an acidic layer of
soil and humus. A hard cap of calcrete develops above the softer
limestone. Cracks in the calcrete are exploited by plant roots. The
softer limestone continues to dissolve. Quartz sand fills the channels
that form. Vegitation dies and winds blow away the sand covering the
eroded limestone. The Pinnacles appear.

You can take a scenic drive (for light vehicles only) of approximately
five kilometres from the Pinnacles car park. Heavy or long vehicles
should remain in the car park and passengers walk approximately
one-hundred metres to the Pinnacles area. Vehicles must stay to defined
tracks and parking bays. Camping is not permitted in the National Park.

 
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Ratings for Perth Jan2007

Writing Quality:Hurried Polished
Travel Experience:Wide-eyed Worldly
Humor Content:Straightforward Humorous
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