 In July and August 2017 a research team led by Richard Freund from the University of Hartford conducted archeological surveys of the former HKP camp site using non-invasive techniques such as Ground Penetrating Radar, Electric Resistance Tomography and drone obtained high resolution topographical maps.Their studies strongly supported the testimony which placed the location of a large mass grave from the final liquidation of the camp at the south end of the courtyard (under the current memorials as well as the parking area).They also confirmed the location of a trench near the outside wall of building number two (the western building) where witnesses reported that prisoners were shot and buried in a long trench along the side of the building.