This Deliverable 5.2, titled Experiment Trials, provides a report on the initial experiments developed and carried out during the first year of the TETRARCHs project. These include experiments on legacy data reuse that took place during excavations at Västra Vång (Sweden) and Toumba Serron (Greece), as well as those on eliciting responses to archaeological photographs at MOLA (UK). The experiments at each of these settings are explained and discussed in detail, before closing the deliverable with general considerations that will form the foundations for future TETRARCHs work.