In the Shetland and Orkney islands, a geo or gio (from Old Norse gjá[1]) is an inlet, a gully or a narrow and deep cleft in the face of a cliff. Geos are created by the wave driven erosion of cliffs along faults and bedding planes in the rock. Geos may have sea caves at their heads. Such sea caves may collapse, extending the geo, or leaving depressions inland from the geo.[2]
See also
- Gjógv, a place in the Faroes
