A Bardsey resident, Hazel Hill, had a website about Pompocali and Hetchell, the result of taking A-level archaeology as -in her words- a very mature student.
The website no longer exists, but it was trawled by the Internet Archive Wayback Machine and a couple of complete captures of the site can be recalled and viewed there.
I’ve copied some of the “About me” page of the site as it gives links to where fuller versions of the work have been deposited, and information about the author.“I grew up in Bardsey well over 60 years ago, and since childhood I have always been intrigued by the unexplained Pompocali earthworks.
Antiquarians, Ralph Thoresby and Dean Gale in 1719, considered them to be of Roman and Danish origin, and even then they appeared ancient. However I have been unable to find anything in their writings to explain their interpretation.
For over 10 years I have been involved in many archaeological excavations as a volunteer. In 2003/2004 The opportunity arose to study "A" level archaeology as a very mature student, and I decided to take the Pompocali earthworks site as my project. The title of the project being "What evidence is there for early huiman activity in the Pompocali area?"
A trawl of libraries and archives revealed very little had been written about Pompocali, so my approach to the site has been to spend many hours on field observations, studying maps and studying the geology of the area.
My "A" level project 2004, has been deposited at the West Yorkshire Archive Service (WYAS), in Wakefield.
A fuller interpretation of the Pompocali earthworks and Hetchell crags, (when no longer constrained by the limits of the examination system), dated 2006, has also been produced. Copies are deposited at;-
Leeds Central Library, (Local Studies Section)
Yorkshire Archaeological Society at Claremont, Leeds.”
I have my own theories about Pompocali but will leave those for another post