Hell's Mouth (Cornish: Ganow Yfarn) is situated northeast of Gwithian on the South West Coast Path in the county of Cornwall, England, UK.[1] The land is owned by the National Trust.[2] It is part of a group of cliff faces in the area, with a café not far from the edge.
In 2011 a jogger on the Cornish Coastal Path noticed cracks in the rock, which is made up of mudstones and sandstones of the Porthtowan Formation and slates/siltstones of the Mylor Slate Formation from the Devonian. The route of the path was diverted as the cracks enlarged.[2] On 23 September approximately of rock fell into the sea. Unusually the rockfall was captured on video.[3]