Fault Lines: Because a fault line is caused from colliding plates, which creates the volcanoes.
Geysers and Hot Springs: Because geysers are highly pressured jets of water that are heated from nearby volcanoes. Hot springs are lakes/ponds that have been heated up and uninhabited because of the nearby volcano(es).
Lava Dome: This occurs shortly after a volcanic eruption; some remaining lava will settle in the dome at the top of the volcano created by the forceful eruption.
