Ice deposits suggested by the NASA-United States Ballistic Missile Defense Organization's (BMDO) Clementine spacecraft in peretually shadowed craters at the lunar South Pole open new possibilities for human expansion into the Solar System. In this unique location, a solar-powered colony could produce fuel and launch spacecraft from the Moon's one-sixth gravity. Water from potential ice resources or the regolith circulated through the dome's cells could attenuate dangerous radiation.