Please note that this is the Narutopedia's article on the ninjutsu used by Raiga Kurosuki. If you are looking for the article on the taijutsu used by Iwagakure-nin then you should head to Rock Avalanche Formation.
This technique is the only lightning-based technique Raiga has displayed, that did not involve the use of his swords. Using it, Raiga can cause a rockslide by sending a wave of electric energy into a cliff. However, this is extremely location-based and needs to be done uphill of a mountain for it to work.