Beneath the parched surface of the American West, where rivers run low and reservoirs touch historic lows, scientists have found something unexpected: substantial reserves of frozen water locked in the earth itself. Using gravity mapping technology that reads the subtle signatures of ice against rock, researchers have charted these hidden glacial deposits across multiple western states without disturbing a single inch of ground. The discovery does not end the megadrought — now understood to be the driest period in twelve centuries — but it quietly expands the map of what is possible, offering