Eagle City was America’s largest and most advanced metroplex on Luna when the Peloran made Contact. But the possibilities of alien gravtech made it look quaint and antiquated by comparison. So the city mayor contacted the Peloran with a proposal to make use of their gravplating in a way that everybody could marvel at. The Peloran jumped at the proposal of a peaceful use for their technology and began fabricating all the gravplates Eagle City needed. That is how Eagle City built a small lake on the surface of Luna. That is how it turned Molke Crater into a Molke Lake worthy of the name. The new Eagle City enjoyed a full one gee of gravity throughout its tunnels and domes, and even the open surface became a shirtsleeve environment for anyone who wished to walk in open-air parks to the sound of lapping water beneath the stars.