Rings in the Landscape

One of the many interesting aspects at Erddig was this feature in the landscape known as the 'Cup and Saucer'.  It was created to prevent erosion and allows the water from the stream to be lowered quickly.

There is a similarity to the circular shapes on the ancient carved stones I have been looking at which are which can be found at many locations across the British Isles and also an association with the circles I created using the Shibori techniques for dyeing fabric.