An exploration of a potential Ancient and Veteran Tree Ontology to plan analysis protocols for future work. This is a screen grab from an OWL file using Protege Desktop. This version is based on woodland surveys in South Wales 2018-2022. The surveys covered ancient woodland, post-industrial woodland, eighteenth-century estate woodlands and urban-industrial woodlands. this ontology follows the concepts developed by Ingo Kowarik. For South Wales, the data collection confirms the increased significance of exotic or non-native species in estate and coalfield locations. Kowarik, Ingo. 2005. ‘Wild Urban Woodlands. Towards a Conceptual Framework’, in Wild Urban Woodlands (Berlin Heidelberg: Springer-Verlag), pp. 1–32 de Bont, Raf, and Jens Lachmund (eds.). 2017. Spatializing the History of Ecology: Sites, Journeys, Mappings (Abingdon: Routledge).