Description
Limited Edition Reproduction of 50 Only
Three thousand years ago, the giant lake system had been half filled with sediment and the mouth of the Clarence River had moved from Grafton to just south of Maclean.
Erosion in the Valley over 3,000 years might have revealed a different pattern in the green, sediment areas of the ancient, backward flowing Clarence River. Erosion might also have changed the boundaries of the “purple” coal deposits and exposed more of the fan shaped flows out of the remnant mountain range.
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