Special Interests: Recontructing the 'chaîne opératoires' of lithic artefacts in perspective of understanding human technological knowledge in response of environmental influence;
Testing a new methodological approach for the use of caves during the Palaeolthic. Based on results of own investigations in the Volp-caves Tuc d'Audoubert and Les Trois-Frères it seems that the magdaleniens in these caves were following a system in the use of the given space;
Creating an inventory of prehistoric sites in the surrounding of the famous 'Feldhofer Grotte' were the Neanderthal skeleton was found in 1856; Building up the unique image archive of slides from euroean cave art which were taken by Heinrich Wendel (Düsseldorf).