Book excerpt: Rob Sands explores the evidence left by the use of axes on wooden beams and tools found in waterlogged archaeological sites dating over 2000 years old. A toolmark can not only inform the archaeologist about the implement used, but also provides evidence of building and artifact construction methods and labor patterns. Examples come from the author’s work at Oakbank Crannog in Scotland. The volume examines the methods of recording, techniques of analysis and implications of this unusual form of evidence.