Austrian Filmmaker stopped from continuing "archaeological" excavations of "Nazis’ ‘biggest secret weapons facility"

Waffen SS helmet found by Sulzer's crew.

Austrian Filmaker Andreas Sulzer reports that he is close to exposing the largest secret weapons facility built by the Nazi's during WWII using slave labor from the Mauthausen-Gusen concentration camp. But according to reports other than having Historian Rainer Karlsch on as an advisor there is no indication that he is using a professional Archaeologists to conduct these investigations. As a result Austrian authorities have shut down his excavation pending further permitting.  However Sulzer states that he believes they will be back excavating again in only a few weeks...