There's nothing mentioned in the SMR .
If there was anything it's likely the NT would have sniffed it out to use in their campaign against development. http://www.guardian.co.uk/uk/2012/dec/29/national-trust-giants-causeway-golf-course
It's interesting there's mention that UNESCO insist on a 500m buffer zone there. Not sure they do that for some other British World Heritage Sites.
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