Do-it-yourself

InterPatagonia

011-54-2972-429267

www.interpatagonia.com Check for campsites and fishing lodges. Regulations are available in English from the Argentine Fly Fishing Association (011-54-11-4773-0821, www.aapm.org.ar).

Guide-booked

Four-day packages from Bariloche-based guide Allan Withington (011-54-911-4194-4094, allan@bariloche
.com.ar), from $320 per person per day.