The location of that complex is several miles to the west of Zelenchukskaya, itself an 18-hour drive from Moscow, and near the border of Georgia.
According to reports, the highly sensitive complex is being used to run anti-satellite systems using both radar and lidar technology.
Lidar, which stands for Light Detection and Ranging, is a remote sensing method that uses light in the form of a pulsed laser to measure ranges (variable distances) to the Earth.
The anti-satellite weapon is a component of the Krona space surveillance system operated by the Russian Ministry of Defence.
The Astrophysical Observatory of the Russian Academy of Science is also not far from the weapon.