I would like to thank all the National Trust staff who work or have worked at Brimham Rocks during the time that I have been a volunteer there. Their dedication to maintaining Brimham for the enjoyment of visitors and to preserve and enhance the site for the future is inspirational.

I would also like to thank all those volunteers who have encouraged me to work on this book and all the visitors whose response to seeing Brimham is often so extraordinary and whose questions about the rocks and geology prompted me to produce this book.

And my thanks to Dr. Roman Soltan for explaining so patiently to me the insights that the research work he undertook for his Ph.D. has yielded.