THE PROPOSED EFFORT WOULD USE A COMBINATION OF MORPHOMETRIC AND RADAR PROPERTIES TO (1) GAIN NEW INSIGHTS INTO THE RATES AND PROCESSES BY WHICH KILOMETER-SCALE CRATERS DEGRADE; (2) USE THIS INFORMATION TO UNDERSTAND THE PHYSICAL CHARACTERISTICS OF THE CRUST AND REGOLITH AND (3) ASSESS HOW IMPACT GARDENING CONTROLS THE REGOLITH EVOLUTION.