Check out the twists and turns of the folded layers of rock. These layers would have formed by silt settling on the sea floor, and then folded when it was still in a softer clay state.
Ecologically Sound Gardening in the Urban Environment
Check out the twists and turns of the folded layers of rock. These layers would have formed by silt settling on the sea floor, and then folded when it was still in a softer clay state.
boZannical Gardens 
