By Christopher Solomon   In Argentina, a country lousy with world-class trout rivers, the Rio Limay may be the most remarkable. It’s been called the most mysterious. Much of the 240-mile river is very good fishing. But the stretch known as the Limay Medio (the Middle Limay), with its

  Interview by Everett Potter Long before the internet existed, before adventure travel and bespoke travel was the rage, there was Frontiers. It was a company that took well-heeled “sports” fishing and hunting around the world. Even if you weren’t much of a fly fishermen and had no interest in