This is a work – it is hardly a painting – which is all about its creation, its performance, rather than the final image. It was great fun to make, in the ideal circumstances of friends’ rough, grassy garden on a low hilltop in western French Alpine foothills . The rough grass was important because the MDF board was supported on it as bright red paint was liberally sprayed over it (and several other ‘paintings’ done at the same time); when dry, oil was splattered across it, and stones and sand scattered across that. As this congealed to the board’s surface, the layer was joined by fresh soil, a shallow hole was dug through the grass and the work was buried for a couple of days to ensure that board and material on it bonded . The final image was carefully created by selection and preparation of the buried surface once it had been excavated. The result reminded me of the pattern of grooves and scratches left behind on rock surfaces by a retreated glacier: hence the title.