Abstractions Based on Circles: Papers on prehistoric rock art presented to Stan Beckensall on his 90th birthday

Paul Frodsham, a Durham University graduate and Honorary Fellow, has worked as a professional archaeologist in northern England for 35 years, including a decade with the North Pennines AONB Partnership during which he set up the Altogether Archaeology project. He is now the group's Archaeology Advisor. He has published numerous books and papers on various archaeological subjects, most recently co-editing Abstractions Based on Circles, a collection of papers on British prehistoric rock art in honour of Stan Beckensall, published by Archaeopress in 2022.

Kate Sharpe is a Research Fellow at Durham University. Her work has three key strands which often overlap: investigating the use of stone in prehistoric Britain, including megaliths, stone tools and, primarily, rock art; using digital heritage to improve understanding and awareness of the ancient past; and copyediting and writing about archaeology. She has experience managing community rock art projects in Northumberland, Durham and West Yorkshire, although her research focus is the rock art of Cumbria.