Stair Hole is a small cove that is to the west of Lulworth Cove in Dorset, southern England.
The folded limestone strata known as the Lulworth crumple are particularly visible at Stair Hole. There are several caves visible from the seaward side of Stair Hole; Cathedral Cavern is supported by pillars of rock rising out of the water.
The rock structure was created during the Alpine orogeny and exposed by subsequent erosion.
