Sputnik
July 3, 2021
The concrete circle in question is approximately 60 feet wide and 30 feet tall, and bears a certain resemblance to the famous prehistoric monument known as Stonehenge.
A strange circular concrete structure built atop of a network of tunnels dug by the Nazis in the Sowie Mountains in Lower Silesia during World War II might have been part of a project to build and test saucer-shaped flying craft, the Daily Mail reports, citing a new documentary by UKTV Yesterday called “Secret Nazi Bases”.