Bill Bashaw drives through a bank parking lot reading from a small screen.
118 feet. 113 feet. 109 feet.
He stops by the bank's sign and points to a pile of rocks at its base.
The screen on his Global Positioning System handset says zero feet.
He digs up the rocks in front of the Bank of the West in Carson City and pulls out a small Tupperware box.
"It's that simple," Bashaw says.
This is geocaching, a treasure hunt game played worldwide by either hiding an object called a geocache or by trying to find one.
The location of …