It has been 'red-zoned' because it sits right on a geological fault line.

Wild's farm was saved when engineers discovered a geological fault beneath the farmhouse, meaning it was more practical to build the carriageways around the property than through it.

It was probably formed where a geological fault in the limestone had created a sea cave and the roof then collapsed.

The building was endangered by coal mining operations and a geological fault, which caused major diagonal cracks in the walls.

However, stability would not have been seriously affected if the harbor had not been constructed over a geological fault line that runs along the coast.