Stacks of time

Epic landscapes are plentiful here in the Outer Hebrides, where scores of impressive rock formations, including spiky sea stacks, sea arches and towering cliffs, have been created over millions of years. Formed from Europe’s oldest rock, Lewisian Gneiss, these islands off mainland Scotland’s north-west coast have been sculpted by volcanic heat, ice, wind and the constant pounding of the sea.
© Cody Duncan/Cavan Images