This article presents the results of a geophysical survey conducted in the Sowie Mountains within the Walim commune (Poland) in order to verify the discovery of the ‘Underground Town' of Riese. Project Riese was the biggest mining and construction project of Nazi Germany. The facility was designed as a convenient and secure location for a headquarters, an armaments factory, and warehouses for goods stolen during World War II. The discovery was made in 2015 with the application of the mysterious KS‐700 apparatus, the same as was used to ‘discover' the ‘Gold Train', which is ground penetrating radar (GPR) according to the manufacturer. It was one of the reasons why the verification surveys of the underground sites and the KS‐700 apparatus made use of the GPR method. The depth range of the GPR method was limited to 5 m due to the strong attenuation of electromagnetic waves. It was thus concluded that the underground structures detected by the ‘discoverers' were probably a result of apparatus errors, in which near‐surface reflections are received repeatedly and recorded as returning from a depth far greater than the actual object.

中文翻译：

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不仅“黄金火车” –里斯（波兰）的“地下小镇” –解释ERT和GPR方法的含糊不清

本文介绍了在Walim公社（波兰）的Sowie山中进行的地球物理调查的结果，以验证Riese的“地下城镇”的发现。Riese项目是纳粹德国最大的采矿和建筑项目。该设施的设计目的是为总部，军备工厂和第二次世界大战期间被盗物品的仓库提供方便，安全的场所。这项发现是在2015年使用神秘的KS-700仪器进行的，该仪器与用于“发现”“黄金列车”的设备相同，根据制造商的说法，这是“探地雷达”（GPR）。这是地下场所和KS-700仪器的验证勘测使用GPR方法的原因之一。由于电磁波的强烈衰减，GPR方法的深度范围限制为5 m。因此得出结论，“发现者”探测到的地下结构可能是设备误差的结果，其中近地表反射被反复接收并记录为从远大于实际物体的深度返回。