40 metres of Splendour

Within the Mount Kaputar National Park near Narrabri, one finds "Sawn Rocks"
The organ pipes pictured, extend about 40 metres above the Bobbiwaa Creek and 30 metres below the surface.

Sawn Rocks was formed when basaltic lava flow cooled slowly and evenly, allowing the crystals within the molten rock to align perfectly with each other. Vertical shrinkage cracks developed at right angles to the cooling surface to form perhaps thousands of uniform, pentagonal columns.
Organ-piping, also known as columnar jointing, is a rock formation caused by volcanic activity.


#84/2019
Aus #11