As it turns out, you don't need sleight of hand or even mud to design gravity-defying cairns. You do need a bit of patience, though, and a knack for "knowing the rocks," according to Michael Grab, an land artist who has been balancing rocks since 2008. He builds his sculptures with rocks from the natural landscape, usually alongside water.
In August 1612, ten people in idyllic Pendle Hill, Lancashire were found guilty of witchcraft and sentenced to death by hanging. In August 2012, a public exhibit opened to commemorate these convictions, and others in England's centuries-long witch hunt. Winding through the rural landscape, Pendle Sculpture Trail features site-specific environmental art by four artists.