|Friday, Sep 14, 2012 - 8:00 AM
"Tracks in the Shifting Sand"
Explore one of the largest dune fields in North America at the Imperial Sand Dunes National Recreation Area. The Algodones Dunes in Southern California stretch across more than two hundred square miles and are visited by more than 1.4 million people each year, most of whom use some sort of off-road vehicle. A state highway splits the northern part of the dune field between wilderness and recreational area, but the task of monitoring the usage creates problems of its own. D