Secret base discovered in Chernobyl thanks to woodpecker sounds

In 1976, the global radio world was abuzz with a mysterious shortwave signal that sounded like a woodpecker. (Photo: Wikipedia)

After years of searching, experts identified the source as the top-secret Duga radar base , deep in the Chernobyl radioactive forest. (Photo: Reddit)

This is a project of the Soviet Union's ballistic missile early warning system, which operated in complete secrecy during the Cold War. (Photo: Totally Lost)

This top secret base includes an antenna 700 meters long and 150 meters high, capable of broadcasting beyond the horizon using ionospheric reflection technology. (Photo: Urban Exploring abandoned locations)

A small city was built around Duga to serve more than 1,500 people, but it does not appear on any official maps. (Photo: GW2RU)

Many believe the Chernobyl power plant was located near this top-secret base to provide power for the giant radar. (Photo: VICE)

After the Chernobyl disaster in 1986, Duga was abandoned and forgotten, isolated for decades in a restricted area. (Photo: Colourbox)

Today, the top-secret Duga base has become an attractive destination for adventurous tourists, and at the same time a chilling historical testament. (Photo: Tripadvisor)

Source: https://khoahocdoisong.vn/phat-hien-can-cu-bi-mat-tai-chernobyl-nho-tieng-chim-go-kien-post1542511.html