John Day Fossil Beds, Oregon
Wind River Range, Wyoming
White Sands, New Mexico
Sandhills, Nebraska
Great Salt Lake, Utah
Scablands, Washington
Silver Falls, Oregon
Coal Mine Canyon, Arizona
Mount Hood, Oregon
Alabama Hills and Mount Whitney, California
Photographs by Zack Frank
Are you Zack Frank?
http://www.idahofallsarts.org/undiscovered-america
:/ disappointed to learn OP didn't take these pictures. Plus 19,000 miles is obscene, the US is only ~3,500 across.