Thunder Pass

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Go trekking off-trail from camp to camp and explore the uncharted Resi valley to get across into the amazing Mountains fjord, in Kawesqar National Park, one of the 17 parks from the Route of Parks of Patagonia.

In this 4 days expedition our local guide will take you through deep nature up to the most amazing viewpoints of the majestic Sarmiento mountain range, where it possible to admire its glaciers Bernal, Hermann, Kiara, Alsina and Paredes. While you go exploring you can learn about the formation of the landscape and the ancestral history behind this beautiful scenery. Then, take a deserved rest in our camps and in our exclusive floating Refuge in heart of this amazing fjord and enjoy of a drink with millenary ice.

Disconnect yourself from the world and reconnect yourself with Earth!
A unique feeling you can experience in this remote National Park while we get lost in its nature, being the only humans in this huge territory, plugged and charged by the energy of the patagonian fjords.

Your participation in this expedition will make you part of a sustainable project and contribute with the remote community of Puerto Eden.

We have regular departures every MONDAY, from November until March. It requires a minimum of 2 participants to depart.

However it is possible to do this expedition on any other date not established. A minimum of 4 participants is required. Subject to availability.
$1.400.000CLP per participant
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NIGHT BEFORE   Briefing of the expedition

Our local guide will visit the participants at the hotel the night before the expedition to give general information about this adventure, confirm pick up time, solve some doubts and to deliver the equipment that PATAGONIANFJORDS supplies with.

DAY 1   Puerto Natales - Resi fjord

We pick up the participants of the expedition from the Hotel at 09:30 am, then we take a boat to navigate 5 minutes from Puerto Natales to Antonio Varas peninsula across the Señoret channel. We continue by vehicle for 45 minutes through a gravel road to Estancia Mercedes where we take our fast boat Explorador IV and navigate for one more hour until the end of the Resi fjord, the entrance to Kawesqar National Park. Here we have our first campsite with expedition tents to sleep and a Dome as shelter, kitchen and dining room for us while we are in this camp.
During the navigation it is posible to see seals, dolphins, penguins, cormorants, condors, and other species.
We have lunch when we arrive to the camp.

Later we’ll go trekking off trail for about 2 hours to Resi lookout, where we can appreciate the beauty of the fjord, the valleys, lagoons, rivers and waterfalls in the surroundings.
We finish the day in our camp Resi with a tasty dinner in our dome.

Camp Resi / Double tents
45 km - 45 min Road / 19 mn - 1 hr Navigation / 4 km - 2 hrs Trekking

DAY 2   Thunder pass - Mountains fjord

After breakfast we begin our trekking circuit. We go 8 kilometers bush walking through a beautiful valley characterized by evergreen forests, waterfalls, peatland, erratic rocks and moraines colonized by colorful lichens and mosses. We trek for about 4 hours by imposing mountains with whimsical shapes until we arrive to the Thunder lagoon, which is surrounded by huge rock walls with amphitheater shape. The powerful action of a gone glacier has transformed these rock walls into a pass with terraces that makes it possible to go through the Thunder pass at 600 meters above the sea level till the Mountains fjord.
We will eat our lunch before going up the pass, by the shore of the Thunder lagoon.

We continue through moraines and erratic blocks as we pass by two beautiful lagoons until we finally have a clear view of the entire fjord that seems tiny surrounded by huge mountains and glaciers in the horizon. From here, the terrain is more rocky and solid than the first section, making it easier to trek down towards our campsite Kiara, where we'll spend our second night. We also have expedition tents to sleep and a Dome with an exclusive panoramic view, located at sea level.
Across the fjord is Kiara glacier which is very active, so it's possible to hear and see ice avalanches breaking off while we enjoy of another rich dinner.

Camp Kiara / Double tents
16 km - 9 hrs Trekking

DAY 3   Sarmiento Mountain Range - Paredes, Alsina, Kiara, Hermann and Bernal Glaciers

We begin the day with a good breakfast. Then we trek off trail from the camp heading to the north of the fjord for 5 kilometers. We'll pass by blocks of rocks, evergreen forest, peatland and some streams that we'll have to cross. It will take us about 2 hours to arrive to a beautiful beach with a glacier in the background, a live postcard. Here we go uphill until we gain about 300 meters of elevation, where we'll get an incredible panoramic view of the glaciers Alsina and Paredes, both flowing down from the icy summits of the Sarmiento mountain range till the fjord itself.
Here we'll have our lunch with such a view.

We come back down the same track we did up. In the beach our boat West Patagonia awaits for us to take us navigating 30 minutes towards South in the Mountains fjord to Bernal glacier. During the boat ride we'll visit as well Alsina glacier, getting a better perspective of this beautiful glacier with huge seracs.
Once in Bernal glacier we hike through a particular trail with colorful moraines that cross the pro-glacier lake, allowing us to get close and safe enough to touch its ice. This permits us to watch and understand its movements and changes that it makes in the landscape through the years.
The contrast of colors between the vegetation, the ice, the mountains and the fjord in the background, makes any picture postcard worthy.

After visiting this glacier, we navigate again in our boat West Patagonia 10 more minutes to the Huiros bay where we will find our exclusive floating Refuge Explorador. Here we can enjoy the facilities, a hot shower, the bar and a last delicious home made dinner.

Floating Refuge Explorador / Shared rooms
8 km - 5 hrs Trekking / 12 nm - 40 min Navigation

DAY 4   Alacalufes path - Return to Puerto Natales

After a nice breakfast, we’ll go out for a hike around the Huiros bay, to Buena Vista lookout, an awesome hike for a last amazing view of the fjord, the mountains, the glaciers, the bay with the floating refuge and the track we must take to go back to Puerto Natales.

We begin the return to Puerto Natales trekking across an Indian Pass known as the Alacalufe path, named as the canoeist ancestors Kawesqar who inhabited all the fjord lands in the last 6,000 years and used this pass to connect the Mountains fjord with Resi fjord. We have trek 1 kilometer to reach the Acantilados lagoon, which is incased between huge rock walls and the only way to go across it is by boat, so we have to navigate 5 minutes to get to the other side of it to continue hiking 20 more minutes to Resi fjord, the beginning point.

Here we meet again our fast boat Explorador IV and navigate one hour until Estancia Mercedes in Antonio Varas peninsula as the first day.
We eat our lunch somewhere on the way and continue until Puerto Natales, finishing this expedition around 15:00 pm, weather conditions permitting.

Back to Puerto Natales
3 km - 2 hr Trekking / 19 nm - 1 hr Navigation / 45 km - 45 min Road

EXTRA DAY  Add one or more days to your expedition (see more)


The activities described may be delayed, changed or cancelled due to rough conditions.
- The expedition is subject to the weather conditions.
- Our groups are very exclusive, from 2 to 8 participants per expedition and only one expedition at a time.
- Your participation in our expeditions contributes to a project to develop tourism in the remote community of Puerto Eden.
- The participants must be experienced trekkers.
- The level of the expedition is challenging.
- There is no phone connection in the entire zone, so you'll be offline during the expedition.


- A daypack (60 liters backpack).
- Headlamp, fleece hat, sunglasses and gloves.
- Quick drying T-shirts, polar flece jacket, down jacket, waterproof parka with GoreTex technology or similar.
- Quick drying long underwear, trekking pants, waterproof pants with GoreTex technology or similar.
- Waterproof boots with GoreTex technology or similar, sandals or crocs for river crossing and relaxing moments after the treks.
*** The brand Arc'teryx has proofed to be very efficient in the cold and rainy weather of the fjords. Our guides use it and recommend it.


- Entrance fee to Alacalufes National Reserve.
- All the land and maritime transportation specified in this program.
- Accommodation in our campsites (double tents - mat - sleeping bag) and in our exclusive floating refuge (shared rooms - sleeping bag).
- Meals during the expedition (breakfast, lunch and dinner).
- Local guide service during the entire expedition.
- Porter service up to 5 kilos (20 liters) between campsites and the floating refuge.
- We provide each participant with a dry bag (20 liters) for the porter service, another dry bag (40 liters) to protects your own belongings, gaiters, sheet liner for the sleeping bags, towel and sunblock.
- A memorable experience!


- Any other service Not specified in this program.
- Gratuities.
- Personal travel insurance.

       in   /   out
11 Nov / 14 Nov
18 Nov / 21 Nov
25 Nov / 28 Nov
       in   /   out
02 Dec / 05 Dec
09 Dec / 12 Dec
16 Dec / 19 Dec
23 Dec / 26 Dec
30 Dec / 02 Jan
      in   /   out
06 Jan / 09 Jan
13 Jan / 16 Jan
20 Jan / 23 Jan
23 Jan / 26 Jan
27 Jan / 30 Jan
       in   /   out
03 Feb / 06 Feb
10 Feb / 13 Feb
17 Feb / 20 Feb
24 Feb / 27 Feb
MARCH 2020
       in   /   out
02 Mar / 05 Mar
09 Mar / 12 Mar
16 Mar / 19 Mar

Each expedition requires a minimum of 2 participants to depart. 8 participants maximum.

We have regular departures every Monday from November until March. However it is possible to do this expedition on any other date not established. A minimum of 4 participants is required. Subject to availability.