Mount Fuji is an active stratovolcano located in Japan, and is the country's highest mountain. It last erupted in 1707.
In 2035, three Kaiju - Raijin, Hakuja, and Shrikethorn emerge from artificial breaches created by the Kaiju-Jaeger drones and made landfall in Tokyo. The Jaegers Gipsy Avenger, Guardian Bravo, Saber Athena, and Bracer Phoenix held them off for sometime, until the three Kaiju merged into a Mega-Kaiju, which then destroyed all Jaegers except Gipsy Avenger. It then headed towards the volcano, where it planned to trigger a worldwide extinction event that would give way for the Precursors to colonize the planet in a second attempt. Gipsy Avenger, with the help of Scrapper, launched into space and dropped itself on top of the Mega-Kaiju, which was about to enter the volcano. Its pilots Jake and Amara escape onboard Scrapper seconds before the impact, which destroyed both the mech and the monster.