Here you will find links to a collection of articles about Rockall & related fiction by Swithin & others. Please click the links below.
The Geology of Middle-earth (originally appeared in Proceedings of the J.R.R. Tolkien Centenary Conference 1992)
Tolkien — and Swithin — beneath the North Atlantic Ocean (Originally appeared in Journal of Middle-earth Studies, Issue 19 (December, 2000) )