![Still from Ruptly video](http://cdn.rt.com/files/news/2c/5f/40/00/tesla-marx-generator-lightning.si.jpg)
The 6-Megavolt device, one of the most powerful in the world, is capable of generating 200 meter-long lightning bolts, and was constructed in the 1970s at a closed facility outside Moscow, but fell into disuse after the collapse of the USSR.
Read more at - http://rt.com/news/181748-tesla-marx-generator-lightning/