Roussel, RoxaneLuca, Livio DeGuillem, AnaisComte, FlorentCampana, StefanoFerdani, DanieleGraf, HolgerGuidi, GabrieleHegarty, ZackaryPescarin, SofiaRemondino, Fabio2025-09-052025-09-052025978-3-03868-277-6https://doi.org/10.2312/dh.20253126https://diglib.eg.org/handle/10.2312/dh20253126This article examines annotation in the documentation field as more than a technical feature, framing it as a structured trace of expert activity embedded in spatial, temporal, and semantic contexts. Using the large scale, multidisciplinary worksite established after the 2019-fire at Notre-Dame de Paris, as a case study, it explores how annotations function as epistemic, multiscalar, and semantically rich knowledge objects that mediate observation, interpretation, and analysis. The interdisciplinary scientific worksite provides a unique setting to test large-scale annotation practices, with hundreds of scientists from diverse disciplines converging around a shared object of study, and address challenges in tool integration, terminology, and workflows. The study focuses on semantic annotation work conducted via the aïoli platform, a web-based 3D annotation tool, analyzing a corpus of 14,000 annotations linked to over 135,000 spatialized images.Attribution 4.0 International License10.2312/dh.2025312610 pages