It seems Andy Goldsworthy is pursuing a variation of a very clever 'walking wall' idea that wallers from Canada (and Britain and the States) gathered together to actually build much earlier here in Toronto, back on the night of September 29th 2012.
See https://thinking-stoneman.blogspot.com/2012/10/nuit-blanch-have-you-ever-heard-arch.html
The idea, originally conceived by Evan Oxland and Akira Inman, included many other exciting components, including an arch, professional graffiti art, music, and a powerful light show - all these elements accompanying the process of the wall being assembled and reassembled, with stones taken from the back of the wall and moved to the front, so that it walked slowly east along Queen Street, during a fabulous night of Nuit Blanche festivities.
