Enceladus, moon of Saturn
One of the innermost moons of Saturn, Enceladus is believed to have ice geysers which may be responsible for sustaining Saturn's E ring's supply of micrometer-sized particles. At some depth beneath the surface, the temperatures are possibly hot enough for water to become liquid, which then, under pressure, escapes to the surface in a geyser. The surface of Enceladus is also cross-cut by numerous faults.