Basalt columns next to Fingal's Cave on the Isle of Staffa, with Mull in the background, Inner Hebrides, Scotland, United Kingdom, Europe

Columnar basalt lava with Fingal's Cave cut into it by sea, Staffa, off west coast of Mull, Inner Hebrides, Scotland, United Kingdom, Europe

View of basalt columns in Fingal's Cave on the isle of Staffa, Inner Hebrides, Scotland, United Kingdom, Europe

The mouth of Fingal's Cave, Staffa Island, with Mull in the distance, Inner Hebrides, Scotland, United Kingdom, Europe

Fingal's Cave, the hexagonal mouth of the cave with the heather-covered slopes of Mull behind, Argyll and Bute, Scotland, United Kingdom, Europe

Entrance to Fingal's Cave, columnar basalt rock, Island of Staffa, Argyllshire, Inner Hebrides, Scotland, United Kingdom, Europe

Columnar basalt lava with Fingal's Cave cut into it by sea, Staffa, off west coast of Mull, Inner Hebrides, Scotland, United Kingdom, Europe

Fingal's Cave, Isle of Staffa, Inner Hebrides, Scotland, United Kingdom, Europe

Fingal's Cave, Isle of Staffa, Inner Hebrides, Scotland, United Kingdom, Europe

Fingal's Cave, Isle of Staffa, Inner Hebrides, Scotland, United Kingdom, Europe

Entrance to Fingal's Cave, Staffa. Note the basalt columns which are not always six-sided. Hebrides, Scotland

Fingal's Cave, basalt island, Staffa, Inner Hebrides island, Scotland, United Kingdom, Europe