The answer to today's Geo Quiz comes courtesy of Roland Kays who is currently in Panama, Central America -- along with a few of his friends.

They're travelling along the Camino de Cruces, an old path that crosses the isthmus of Panama.

Roland and Vince on Pipeline. Photo: Christian Ziegler

It's the shortest land route, one used centuries ago by pirates and conquistadors, to get from the Caribbean to the Pacific, and back.

Riding over Frijoles bridge on Pipeline road. Photo by Christian Ziegler

Listen our interview with Roland Kays (a research associate at the Smithsonian Tropical Research Institute in Panama) and his friends, Steve Rellis, Brad Stratton, Perry Wooden, and Vince Lemay. What do they all have in common?

They're all crossing the isthmus of Panama ---riding unicycles along the Camino de Cruces, the answer to the Geo Quiz.