Tucked beneath the Tromen pass on the approach to the Chilean border, this small glacial lake at the foot of Volcán Lanín sees a fraction of the pressure its larger neighbours attract. Clear, cold and quiet, it holds browns and rainbows that respond well to a careful approach from the bank or a small boat, particularly early and late in the day when fish move shallow to feed. A Parachute Adams or Foam Beetle worked along drop-offs and inflow current takes fish during calm spells, while a Stimulator can draw attention where wind ripples the surface. Because it sits within a shared National Park and provincial environment, checking the current annex before fishing is worthwhile. It rewards anglers happy to fish quietly rather than cover water fast, and the volcano at your back rarely lets you forget where you are.

• Lake
• Volcanic glacial