Echoes of a long gone glacial past.

The glacier was God's great plough set at work ages ago to grind, furrow, and knead over, as it were, the surface of the earth.
Louis Agassiz. Swiss biologist and geologist. 1807-1873

A fine day here on the Costa del Ythan. The gently rolling slopes across the river awaiting man's plough are kames, dating from the last ice age. Kames are  mounds of sand, gravel and till that accumulated in a depression on a retreating glacier, to be deposited on the land surface when the glacier finally melted. The local farmer has been extracting gravel from the kame with which to repair his farm track.