Early settlers called it the "uttermost place on earth." Even the outfitter named his operation "Far End." Just think of the Rio Irigoyen as the bottom of the planet, as far south as you can fish with a fly. Here, in a land of hobbit-like trees, feral cattle and edgy weather run thin, shallow rivers that pulse each austral summer with the flow of searun browns 10- to 25lbs. Rustic lodge, good services and guides. Intimate angling for big, mercurial fish using 7- to 9-wt rods with sinking lines.