Creationists should note that their claims about the Giant’s Causeway being a product of Noah’s flood have been debunked in detail, and shown to be nonsense.  The reference is:

Moreton, S. (2009)  Facts meet fantasies at the Giant’s Causeway.  Earth Science Ireland, 6, p. 37-39.  On-line: www.habitas.org.uk/es2k/ click on “Magazine”.