Listen • 3:29
Marcellus Cadd signing his name in Round Rock, Texas, after finding a cache in all 254 counties in the state.
On a sweltering day earlier this summer, Marcellus Cadd was standing in a trendy neighborhood in downtown Austin.
His phone told him he was 20 feet from an object he was honing in on using GPS coordinates. He walked over to a bank of electrical meters on a building, got down on one knee, and started feeling underneath.
"Holy crap, I found it!" he said as he pulled out a small metallic container. Inside was a plastic bag with a paper log. Cadd signed it with his geocaching handle, "Atreides was here."