6 limitations of conducting research based on online accessible data. It examines the classical archaeological research by evaluating to what extent all the data gathered using e.g. DIME, FindSampo, PAS etc. can be used for research-relevant purposes. Additionally, the study explores how the data can be used to identify different networks, shedding light on regionality and trade networks for the period. The conclusions of this research are expected to offer valuable insights into the utility of online databases in archaeological studies and contribute to the ongoing discourse on methodological approaches in material culture research. Moreover, the developed typology may serve as a framework for future research in this period. Poul Hounsvad (Aarhus University), Assembling fragments of the warrior's crown The distribution of crested helmets from the LGIA (550-800 AD) has previously been associated with England, Sweden, Norway, Latvia, and recently, the Netherlands. However, a rise in metal-detecting and citizen science, combined with data from online forums and databases like DIME, has led to the discovery of crested helmet fragments across multiple northern European countries. Many new pieces were identified through thorough searches of DIME, museum databases, metal-detecting forums, and publications. However, some fragments proved challenging to identify due to shared motifs with other objects. Analysis suggested a combination of continentally inspired local production, iconography, and social status representation in helmet decoration. This research updates the distribution of LGIA crested helmets, primarily using finds and data from metal detectorists, highlighting the presence of crested helmets in Denmark and suggesting a Scandinavian origin influenced by continental empires like Rome and Byzantium. Jeroen Vandenborre (VONA), Let’s Dig Together Commercial archaeology has rapidly replaced various local and regional non-professional initiatives in Flanders since around 2000 and certainly has taken a flight since 2010. The session aims to show the opportunities and difficulties of cooperation between professional and non-professional parties in the future. The contractual relationship between a professional archaeologist and his client too often implies a lack of regional knowledge and knowledge building. It excludes hobby archaeologists because of different local regulations concerning safety and protection of professional work. How can we change this structural? - Create an official status as hobby archaeologist. Since collaboration between a company and a heritage service is possible, a hobby archaeologist can still be involved in fieldwork and development of local knowledge. A basic training of one day about safety, heritage law, but also regular feedback, … should be mandatory. - Mapping archives and depots of local archaeological/historical associations. - Change commercial specifications and contracts. Emphasize regional involvment, reward corporate social responsability. The stability, durability and investments offered by commercial companies in combination with the regional knowledge, network and passion of hobbyists, supported by common ideas among clients, both private and governmental, is a recipe for high-quality sustainable archaeological research with automatic local anchoring and knowledge building.
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