Traverse remote ridges, high lagoons and the mythical Paso Beban on a private four-day trek from Ushuaia. Expect long days, varied terrain and guided backcountry camping beneath Southern Hemisphere stars.
Traverse remote ridges, high lagoons and the mythical Paso Beban on a private four-day trek from Ushuaia. Expect long days, varied terrain and guided backcountry camping beneath Southern Hemisphere stars.
A wind-swept ridge opens above the Carbajal Valley and the group steps into a landscape that feels moved by glaciers—tussock grasses, scattered lenga, and steep drains feeding crystal lagoons. On this private four-day expedition participants cross the Valdivieso Dome, arc around five high-elevation tarns, and push toward the storied Paso Beban with Lake Fagnano sliding into view on clear days.
Verified experiences and guided adventures in the surrounding area.
Operated by 54° Trek-expeditions · Ushuaia, Tierra del Fuego
A wind-swept ridge opens above the Carbajal Valley and the group steps into a landscape that feels moved by glaciers—tussock grasses, scattered lenga, and steep drains feeding crystal lagoons. On this private four-day expedition participants cross the Valdivieso Dome, arc around five high-elevation tarns, and push toward the storied Paso Beban with Lake Fagnano sliding into view on clear days.
The route follows old glacial cuts carved into the Fueguino Andes; moraine ridges and oligotrophic lagoons mark where ice once roamed. The area has long been used by indigenous Yamana and Selk'nam peoples and later by European settlers who mapped passes for sheep drives and scientific surveys. Today the shelters—simple dome refuges—sit where shelter and water coincide, offering practical basecamps under remote, wide skies.
Expect full days: Day 1 tops out at about 20 km with 400 m ascent; Day 3 is the hardest, ~15 km with 900 m gain. Terrain varies from well-defined trails to scree and grassy benchland; navigation and pace are steady but deliberate. Nights are cold even in summer; the absence of light pollution makes the constellations bright but temperatures drop quickly.
Practical notes: train for multiple uphill days, pack layers for rapid weather shifts, and bring waterproof boots with good ankle support. Water is abundant but filter it; guides provide meals and logistics, and transfers usually begin in Ushuaia. Plan for limited cell signal and carry a headlamp, repair kit, and a compact emergency bivy. This expedition rewards endurance with expansive views, quiet lagoons, and the rare satisfaction of crossing a true southern Andean pass.
challenging.
4 days.
Participants should have good cardiovascular fitness and experience with multi-day hikes; expect full days of uphill walking and uneven terrain.
The Valdivieso area is remote with limited or no reliable cell coverage in many sections; guides carry satellite or radio communications for emergencies.
Guides provide three breakfasts, four lunches and three dinners and nights are in dome refuges or tents depending on itinerary and conditions.
A moderate-to-high fitness level and prior multi-day trek experience are recommended due to long daily distances and significant elevation gain on Day 3.
Late austral spring to early autumn (November–March) offers the most stable conditions, though weather can change rapidly at any time.
The Fuegian passes were used intermittently by indigenous groups and later surveyed by explorers and shepherds; many names reflect local lore and early mapping efforts.
This is fragile sub-Antarctic terrain—stick to durable surfaces, pack out all waste, and use existing shelters to limit campsite proliferation.
54° Trek-expeditions operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




A wind-swept ridge opens above the Carbajal Valley and the group steps into a landscape that feels moved by glaciers—tussock grasses, scattered lenga, and steep drains feeding crystal lagoons. On this private four-day expedition participants cross the Valdivieso Dome, arc around five high-elevation tarns, and push toward the storied Paso Beban with Lake Fagnano sliding into view on clear days.
A wind-swept ridge opens above the Carbajal Valley and the group steps into a landscape that feels moved by glaciers—tussock grasses, scattered lenga, and steep drains feeding crystal lagoons. On this private four-day expedition participants cross the Valdivieso Dome, arc around five high-elevation tarns, and push toward the storied Paso Beban with Lake Fagnano sliding into view on clear days.
The route follows old glacial cuts carved into the Fueguino Andes; moraine ridges and oligotrophic lagoons mark where ice once roamed. The area has long been used by indigenous Yamana and Selk'nam peoples and later by European settlers who mapped passes for sheep drives and scientific surveys. Today the shelters—simple dome refuges—sit where shelter and water coincide, offering practical basecamps under remote, wide skies.
Expect full days: Day 1 tops out at about 20 km with 400 m ascent; Day 3 is the hardest, ~15 km with 900 m gain. Terrain varies from well-defined trails to scree and grassy benchland; navigation and pace are steady but deliberate. Nights are cold even in summer; the absence of light pollution makes the constellations bright but temperatures drop quickly.
Practical notes: train for multiple uphill days, pack layers for rapid weather shifts, and bring waterproof boots with good ankle support. Water is abundant but filter it; guides provide meals and logistics, and transfers usually begin in Ushuaia. Plan for limited cell signal and carry a headlamp, repair kit, and a compact emergency bivy. This expedition rewards endurance with expansive views, quiet lagoons, and the rare satisfaction of crossing a true southern Andean pass.