Imagine a volcano exploding! That very first dramatic release of energy that rockets rock and gases high into the sky. A broken and destroyed crust falls back to earth and is covered by the ash spewing from the volcano. Take a bow Purple Breccia! Well, that's the theory - or at least one of them! As with all things geological, there is always more than one theory.
Purple Breccia in starring role in wall, can you spot it? |
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