is very close to Jonastal. Moreover, Ohrdruf is located at the end of the hill, which starts at Jonas Valley and where there are still the remains of excavations and blocked tunnels. Ohrdruf itself is located at almost the same elevation as the excavation site. It is suggested that there were tunnel exits somewhere around Ohrdruf too. The existence of easy transportation links and a railway in Ohrdruf may support this approach. Documents on which Karlsch's book is based shed light on the motivations of the German scientists working on the paths of nuclear reactors and isotope separation; the historian of science Mark Walker also published his analysis in 2005. The area has also been searched for the legendary Amber Room. The Amber Room was located in the Catherine Palace in Tsarskoye Selo near Saint Petersburg. It was a spectacularly beautiful room sometimes called the "Eighth Wonder of the world." The Amber Room was looted during World War II by Nazi Germany and brought to Königsberg. Knowledge of its whereabouts was lost in the chaos at the end of the war. Current status Jonastal itself remains within a military training area and entry is strictly prohibited. This, however, does not prevent the site from being regularly visited by explorers and would-be treasure hunters who risk arrest and a fine if caught. Monuments have been erected in Jonastal and nearby and are dedicated to the victims of the nearby Ohrdruf camp. See also Project Riese, a set of seven unfinished Nazi-era underground works in southwest Poland Weingut I, an incomplete underground facility for manufacturing the Junkers Jumo 004 jet engine Literature Rainer Karlsch - Hitlers Bombe (March 2005) John Douglas-Gray in his thriller The Novak Legacy (June 2011) References External links Photographs of the Jonanstal site German Spiegel article in English US article regarding Jonastal rumours Research and development in Nazi Germany Nazi subterranea Valleys of Thuringia