PT Unknown AU Krenn-Leeb, A Supper, R Ottowitz, D Jochum, B Preiner, A Weßling, R Jetzinger, D TI A swamp as an obstacle to approach – archaeological and geoelectrical investigations on the Early Bronze Age fortification of Ratzersdorf, Lower Austria SE Advances in On- and Offshore Archaeological Prospection: Proceedings of the 15th International Conference on Archaeological Prospection PY 2023 BP 159 EP 162 PU Universitätsverlag Kiel | Kiel University Publishing DI 10.38072/978-3-928794-83-1/p30 WP https://macau.uni-kiel.de/receive/macau_mods_00003469 LA en DE defense conception; Early Bronze Age; fortified hilltop settlement; geoelectric prospection; swamp; archaeological prospection; archaeology; geophysics; remote sensing; subsurface imaging; Archäologische Prospektion; Archäologie; Geophysik; Fernerkundung; Bildgebung des Untergrunds SN 978-3-928794-83-1 AB Interdisciplinary cooperation between geoelectrics and archaeology made it possible to identify a swamp as an integral part of a defense concept for the first time in Austria at the Early Bronze Age hilltop settlement of Ratzersdorf, Lower Austria. The marsh and a spring were included as natural topographic structures in the defense conception of the fortification. PI Kiel ER