Follow the Emerald River through peat bogs and sub-Antarctic forest to a glacier-fed lagoon that turns teal with suspended sediments. This moderate 4–5 hour trek from Ushuaia is a classic Fuegian day hike—accessible, wild, and revealing of the region’s glacial geology.
Follow the Emerald River through peat bogs and sub-Antarctic forest to a glacier-fed lagoon that turns teal with suspended sediments. This moderate 4–5 hour trek from Ushuaia is a classic Fuegian day hike—accessible, wild, and revealing of the region’s glacial geology.
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Operated by Patagonia Dreams · Ushuaia, Tierra del Fuego
You step off the van onto a low, chill wind that seems to push the forest open like a curtain. The trail starts by the Lasifashaj Valley, following a river that insists on staying visible—sometimes whispering, sometimes surging—guiding each footstep toward a blue you haven’t seen before.
moderate.
4–5 hours.
Suitable for hikers with moderate fitness; prepared for sustained uphill, uneven terrain and some mud.
The full experience including transfers is about 4–5 hours; the trail is roughly 8–10 km round-trip with approximately 200–300 m of elevation gain depending on where you start.
Minors under 9 are not permitted on this tour; older children with good stamina can manage the route with frequent rests.
No technical skills are required, but hikers should have a moderate fitness level and be comfortable on uneven, sometimes muddy terrain.
The lagoon often freezes and the operator includes poles and crampons; weather can close the trail and tours may be canceled for safety.
A boxed lunch is included; bring water (at least 1–1.5 L) and any snacks you prefer.
Transport is included with a roughly 20-minute transfer from most hotels; for private accommodations you’ll be given a nearby meeting point.
The landscape is shaped by Pleistocene glaciation and sits on territory historically used by Yámana and Selk’nam communities; modern trails trace natural corridors long used for travel.
The peat bogs are sensitive to foot traffic—stick to marked paths and use boardwalks to minimize erosion; local operators emphasize Leave No Trace practices.
Patagonia Dreams operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




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Book directly with Patagonia Dreams for the best rates and real-time scheduling.
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