The stream at the bottom of the valley flows out to sea under a boulder storm beach backed by soft orange–brown cliffs of head deposits formed by solifluction when the climate was similar to that of Greenland's today. These cliffs are easily eroded and amongst the rounded boulders on the beach are irregular shaped granite stones that have fallen from the cliff.[2]
Boscawen SSSI
The Boscawen SSSI, which encompasses the whole of the cove, "is a nationally important site for Quaternarygeomorphology and Quaternary stratigraphy. Coastal exposures at the site show a sequence of granitic shore platform overlain in turn by raised beach deposits and head deposits".[3]