** AWARDS ISSUED PRIOR TO JANUARY 20, 2025, WERE FUNDED UNDER PREVIOUS ADMINISTRATIONS AND MAY NOT REFLECT THE PRIORITIES AND POLICIES OF THE CURRENT ADMINISTRATION.** WE EXAMINE NONMARKET VALUATION USING DATA FROM GEOSPATIALLY REFERENCED CELL PHONE LOCATIONS. THESE MOBILITY DATA HAVE THE POTENTIAL TO REVOLUTIONIZE RECREATION MODELING AND BENEFIT TRANSFER WHILE ALLEVIATING THE HIGH COST AND SAMPLE SELECTION CHALLENGES INHERENT IN TRADITIONAL SURVEYS. THIS DATA ALSO ALLOWS NEW LINES OF INQUIRY DUE TO ITS EXTENSIVE GEOGRAPHIC COVERAGE AND PANEL NATURE. HOWEVER, THIS DATA PRESENTS NEW CHALLENGES REGARDING BEST PRACTICES AND COMPARABILITY, REPRESENTATIVENESS, AND VALIDITY OF FINDINGS.