This volume presents previously unpublished data (including inter alia plans, photographs, catalogues, sources, geological analyses, water/drainage, travellers' reports) gathered from recent major archaeological investigations into a number of important underground structures from the six districts that together form the territory historically known as 'Cappadocia' (eastern-central Turkey) - Aksaray, Kayseri, Kirsehir, Nevsehir, Nigde and Yozgat. Besides synthetic data (name, location, type, planimetrics), each of the 40 records detailed in this work includes a route-finder, historical and urban-setting notes, descriptions of the underground site and related plan based on instrumental surveys or sketches.Edited by Roberto BixioIntroduction by Roberto Bixio, Vittoria Caloi and Andrea De PascaleRecords compiled by Roberto Bixio, Vittorio Castellani, Andrea De Pascale, Mauro Traverso, Jérôme Triolet and Laurent Triolet