"Place on the planet to raise both the temperature and the atmosphere level."
A Volcano is a terraforming tool. When used, the player's spaceship terrasculpts a smoldering volcano on the planet, which spews heat and volcanic gas into the atmosphere. This increases both the temperature and the atmosphere level. If it is placed right next to a city, the volcano will instantly obliterate it. Compared to an Anti-Matter Bomb, a volcano is a cheaper way to destroy a city if you don't care about the terrascore of the planet. A volcano may damage your ship if you get too close. Sometimes a volcano could be found on your home planet, but will not affect the T-score of the planet.
This tool uses purchased ammunition.