Rift Wells are fountains of Rift Energy that spew from the ground. They are an excellent source of Rift Energy.
In the StoryEdit
Rifters build Rift Extractors on Rift Wells to extract the Rift, which brings them into conflict with the Outcast, who worship the Rift and refuse to have it taken from them. This sets the stage for the conflict in Starhawk: Rifters want to build Rigs and mine Rift Energy; the Outcast want to build Shrines and destroy anyone who attempts to interfere.