Emilio Frey Hut - San Martín Hut (Jakob lagoon)


High Difficulty

November - April
Very High (May - October)


9 km.

Elevation gain

530 m.


8 - 10 hs.

How to get there


Refugio Emilio Frey – Abierto todo el año

Refugio San Martín (Laguna Jakob) – Abierto todo el año

  • The overnight stay in both refuges or doing camping requires a confirmed reservation, before heading up.
  • It is recommended to do this walk only in the sense described, with good weather, good visibility and no wind
  • Descend slowly on the scree and loose rock to avoid slipping and stumbling.
  • Check trail conditions on the Emilio Frey Hut website.
  • Recommended to go with a mountain guide.
  • Always check the conditions with the hut keepers and let them know your plan.
  • Fires are not allowed.
  • Take plenty water.


Starting at Emilio Frey Hut, border around the lagoon on the right to the end of the valley, there it begins to climb on loose terrain up past the Schmoll lagoon. Round the left side and up a steeper section of rocky loose trail, look for the red markings up to what is called “Football field”.

A few more meters of gentle uphill North you are on the ridge, great views of the Nahuel Huapi lake and a junction and well indicating signs. To the right you head back to Catedral Ski resort, take a left towards the Rucaco valley and the San Martin Hut. The descent is very steep at first, big loose rocks, then an easier scree.

Trail enters the lenga forest, continues down to the base and along some clearings, may be marshy wet at the beginning of the season. Continues along, crosses a couple of small creeks and soon begins to climb above vegetation again onto rocky terrain.  Steep last bit up to the Brecha Negra ridge left or South up the ridge for a few meters and then descends on steep and loose terrain to the Jakob lagoon, cross the stream coming out and a few meters is the San Martin Hut.

A prior reservation is required at Emilio Frey Hut and for groups of more than 10, also at San Martin Hut.

From here you can continue the “4 Huts traverse” towards Manfredo Segre Hut (Laguna Negra), descend towards Colonia Suiza and Bariloche or continue on the Huella Andina traverse trail towards Tronador area to Los Césares.

To improve the trekking experience, it is recommended to contact a Mountain Guide authorized by the AAGM (Argentine Association of Mountain Guides)