This is the Tekoi Test Range. Or, at least it once was. The site is long abandoned now, but it once served a vital purpose. A military purpose. And the work done at Tekoi is still out in the world today.
Constructed during the Cold War, at the entrance to the facility is a warning sign in Russian, but this is not the former Soviet Union. This is the great state of Utah, where, in Skull Valley, Tekoi resides. Much of what happened on site was classified.