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The Marble Caves (Cuevas de Marmol) in Chile are a spectacular set of mineral formations in Lago General Carrera.
Earning Instagram fame and drawing thousands of Chilean and international tourists to the tiny town of Puerto Rio Tranquilo each season, the Marble Caves have become an icon of Chilean Patagonia.
Formed by centuries of wind and water erosion, a collection of caves, caverns and towering sculptures with swirling patterns of marble sit in the brilliant blue glacial waters of the lake.
Visitors can get a close look at the formations on a boat or kayak tour, with several different ports and tour routes offered by the plethora of local agencies in town.
Despite their fame, visiting is not quite as simple as you’d expect. The Marble Caves are located in a very remote part of Patagonia, and many tourists don’t quite understand what visiting this area entails. If you don’t have sufficient time to dedicate to the area, the caves may not be worth the very long journey to get there.
In this post, we’ll cover everything you need to know about visiting the Marble Caves in Chile, comparing the different ports to depart from, boat vs kayak tours, recommended tour companies and our recommendation on whether the Cuevas de Marmol are worth visiting.
About the Marble Caves in Chile
The Marble Caves are a set of unique mineral formations located in Lago General Carrera in Chilean Patagonia.
This is the largest lake in Chile, spanning across the border to Argentina, where it is known as Lago Buenos Aires. The glacial-fed lake has a brilliant blue colour and is surrounded by a wall of snow-capped mountains.
As if the beauty of the lake wasn’t enough, around its shore is a spectacular series of marble formations.
The marble is not quite the same as Italian marble that you might be more familiar with, but it’s just as beautiful! Patterns of grey, yellow and white are streaked across the rock, with a polka dot surface.
Centuries of crashing waves and roaring Patagonian winds have eroded and shaped these unique mineral sculptures, with a series of caves lining the lake shore, and huge formations soaring from the bright blue waters of the lake.
The Marble Caves are confusingly referred to by a couple of different names. Once I visited, I understood that these names all refer to different formations:
- 💎 Cuevas de Marmol / Cavernas de Marmol: the Marble Caves or Marble Caverns are probably the most-used name for these collective formations. In one section of the lake, you will find a series of small circular caves along the shoreline, some extending for metres into the rock wall.
- 💎 Tunel de Marmol: the Marble Tunnel is exactly as the same suggests – a tunnel in the marble! The effect of thousands of years of pummeling waves is evident here, and if the water level in the lake is low enough, you can sail right through this tunnel, full of arches, columns and caves.
- 💎 Catedral de Marmol: the Marble Cathedral is perhaps the most famous image of the Marble Caves. This hulking sculpture stands proudly alone in the lake. I can’t say I saw the resemblance to a cathedral, but circling this huge structure by boat was humbling, seeing what nature can produce.
- 💎 Capilla de Marmol: different from the cathedral, the Marble Chapel is a smaller formation nearby. It’s said to look like a chapel because there is the outline of two lovers standing as they would at a wedding. Again, I didn’t see it! But the intricate arches and columns of this formation were just spectacular.
Where are the Marble Caves
The Marble Caves are located in Lago General Carrera near the town of Puerto Rio Tranquilo in Chilean Patagonia.
Puerto Rio Tranquilo is one of a string of tiny towns along the Carretera Austral or Southern Highway, a mostly unpaved route that is the only access to this remote part of Chile.
Visiting this region of Chile is quite an undertaking, with very limited connections by air or land. It’s really just one long dirt highway surrounded by fjords, glaciers and islands to the west, and the Andes mountains to the east.
Puerto Rio Tranquilo is situated around the middle of the 1,240 km (770 mi) highway, 3.5 hours from the nearest airport and 3.5 hours from the border crossing with Argentina (which is already 8+ hours from any town you’d likely be visiting).
Getting there is quite the feat, as I will explain below, and I urge you to reconsider visiting if you’re only coming here for the caves. The Carretera Austral is one of the most beautiful parts of Patagonia. It’s wild and raw and untouched, but it requires dedication – both time and travel style – to do it justice.
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How to get to Puerto Rio Tranquilo
The Marble Caves of Patagonia have become such an icon that many people pin them on their Google Maps and vow to visit, without having any understanding of where the caves are located or just how remote they are.
If you’re just coming to this area purely to visit the Marble Caves, don’t bother.
That sounds harsh, but Puerto Rio Tranquilo and its surroundings are not a place you pop into for a few days. If you can’t dedicate a few weeks to exploring all, or at least a decent stretch of, the Carretera Austral, I personally think your time is better spent elsewhere. It’s a long journey for a 1-hour boat tour.
The Marble Caves should be one activity in a broader plan to road trip the Carretera Austral, not the destination you travel hours for.
So, in this context, you will already be in Puerto Rio Tranquilo. I’ve got more detailed information about getting to the town in my dedicated guide, but in short, there are a couple of options:
- 🚗 Drive: it’s ~2.5 hours south of Villa Cerro Castillo or ~3.5 hours south of Coyhaique and Balmeceda Airport. If you’re travelling north, it’s ~2.5 hours from Cochrane. If you’re crossing the border from Argentina in Chile Chico, it’s ~3.5 hours.
- 🚌 Bus: there are buses to Puerto Rio Tranquilo from Chile Chico (near the Argentine border), Cochrane, Villa Cerro Castillo and Coyhaique.
From Puerto Rio Tranquilo, you will join a boat or kayak tour to visit the caves. More on that below…
When to visit the Cuevas de Marmol
The general advice for visiting Patagonia is to come during the warmer months, which are between October – April.
There’s no guarantee these summer months will actually be warm though! Patagonia is prone to wild weather at any time of the year, and you should be prepared for rain, wind, snow or sun in any month.
The peak summer months of December – February are the warmest, with long days and (hopefully) clear sunny skies, however, it is the worst period for the fierce Patagonian winds.
Given you’ll be taking a boat or kayak to the Marble Caves, wind can really affect your experience and sometimes even cancel tours. The lake gets choppier and wavier than you’d expect, and it can be a wet and wild ride.
These months are also the busiest in the region. Whilst the Carretera Austral is nowhere near as busy as the more popular destinations in Southern Patagonia, Puerto Rio Tranquilo is the most touristy town along the highway, so you’ll feel the crowds here more than elsewhere.
This is a blessing and a curse, and can work in your favour when it comes to visiting the Cuevas de Marmol. Tours usually require a minimum number of passengers, and the more passengers there are, the cheaper the cost.
The other factor to consider when planning a visit to the Marble Caves is the water level.
The glacial melt in summer causes the water in the lake to rise, which can impact your ability to go inside some of the caves, as it’s too tight for the boats to fit in. The water level drops slightly in the winter, and when we visited in April, we were able to boat inside many of the caves.
I personally think it’s better to visit Patagonia (and subsequently the Marble Caves) slightly before or slightly after peak season. The temperatures will likely be lower, but you can avoid some of the crowds and hopefully the worst of the crazy winds.
We visited the Cuevas de Marmol in mid-April. While we weren’t blessed with a sunny day, this was just bad luck and not an indication of the weather at this time, as we had plenty of nice days before and after. It was cool, but it wasn’t windy, and the lake was quite calm, with a water level low enough to explore all of the caves and caverns.
A lot of people will have you believe that you can only visit the caves in summer, and everything closes in April. This isn’t true. Puerto Rio Tranquilo does slow down from April/May, and a lot of tourism businesses close for the winter season, but you can certainly visit at any time of the year and find a tour to the Marble Caves. You just might need to pay slightly more if there are not a lot of other passengers to share a boat with.
🌞 You can’t control the weather, but if you’ve got a few days to choose from, opt for a clear, sunny day to see the water in the caves illuminated, with low wind to ensure a smooth boat journey or the possibility to kayak
Tours to the Marble Caves
Okay, you’re in Puerto Rio Tranquilo, ideally it’s a sunny day with low wind, maybe slightly out of the summer season so the water level is low… NOW we can talk about tours to the Cuevas de Marmol.
Which port to depart from?
There are two different departure points for tours to the Marble Caves:
- 🏘️ From Puerto Rio Tranquilo town
- ⚓️ From Puerto Marmol in Bahia Mansa
FROM TOWN
There are dozens of tour agencies on the lakeshore in Puerto Rio Tranquilo offering tours to the Cuevas de Marmol. Their boats will depart directly from town.
This is the easiest option if you do not have a vehicle.
It’s also the only place where you can opt for a lengthier tour that visits the main set of marble formations near Puerto Rio Tranquilo, but also a second set on the other side of the lake near Puerto Sanchez.
The downside of this option is that you spend at least 30 minutes on the boat before you reach the area where the marble formations are located.
On a calm, sunny day, this isn’t really an issue. But if the lake is choppy (common), you’ve signed up for an extra hour of bumping waves where you will get seriously wet!
If you sign up for a kayak tour in town, they will actually drive you to the port below to start kayaking, as it would be quite a tough paddle from town.
Another thing to be aware of here is that the town is where the majority of tourists are based, so you might end up on a pretty full boat in peak season (25+ passengers). If you’re concerned about this, be sure to ask the tour company what their capacity is.
FROM PUERTO MARMOL
Puerto Marmol (also known as Bahia Mansa) is an alternative port located about a 10-minute drive south of town. There is a company set up right here offering boat and kayak tours.
The benefit of this port is that it is much closer to the marble formations. Within a few minutes, you will start seeing caves along the shoreline, and it’s not long before the most famous structures, the Capilla de Marmol and Catedral de Marmol, come into view.
The tours are a bit shorter, because you don’t need to travel from town, around 1 hour vs 1.5 hours, but subsequently they’re generally slightly cheaper than the going rate from town.
The downside of this option is that you need a vehicle to get to the port.
Also, the road down here is insanely steep! It felt like we were driving down the side of the cliff, with blind switchbacks and tight corners. I was terrified, but Brayden handled it perfectly, and he wasn’t worried. If you’re a confident driver, you’ll be fine. We saw cars of all shapes and sizes in the car park.
💎 There is actually one more port where you can take tours from. Puerto Sanchez, located on the other side of the lake, has its own set of marble formations. Unless you’re planning to spend a few days in this area, I wouldn’t recommend this option as the road to get here is very rough and it’s a big detour from the Carretera Austral
Boat vs kayak
There are two different types of tours you can take to see the Cuevas de Marmol:
- 🚤 Boat
- 🛶 Kayak
BOAT TOURS
Boat tours are the easier option and don’t require any physical exertion.
They’re generally quicker tours, ~1 hour from Puerto Marmol or ~1.5 – 2 hours from town, unless you add the Puerto Sanchez formations too, which is ~2.5 hours.
Boat tours are cheaper too. Prices differ depending on the season, how many passengers there are, how desperate the companies are to run the tour, etc., but as a guide, these are the going rates:
- 🚤 Tours from Puerto Marmol: 18,000 CLP (~ $18 USD)
- 🚤 Tours from town: 20,000 CLP (~ $20 USD)
- 🚤 Tours from town that include the Puerto Sanchez formations: 30,000 CLP (~ $30 USD)
If you’re visiting in the summer months when the water level is high, the downside of the boat is that you won’t be able to get too close or go inside the caves.
If you visit in the shoulder season (spring or fall) and the water level isn’t too high, a boat can still go into the caves. In April, we were able to boat in and out of many caves and through the marble tunnel, so we didn’t feel that choosing a boat sacrificed our ability to get close to the formations (at least at this time of the year).
KAYAK TOURS
Kayak tours offer a more energetic, involved experience that gets you closer to the Marble Caves. It’s quieter, more tranquil and immersive to paddle around the lake vs being in a noisy, busy boat.
They’re lengthier experiences, usually around 2.5 – 3 hours, given that it takes a lot longer to get to and around the formations without the help of an engine.
Because the experience is longer, it’s also more expensive. The prices vary a bit more for kayak tours, but here are a few prices we saw around town:
- 🛶 Kayak tours from Puerto Marmol: 35,000 CLP (~ $35 USD)
- 🛶 Kayak tours from town: 50,000 CLP (~ $50 USD)
On a kayak, you can get much closer to the formations and go inside the caverns and caves. The water level is still a factor, but you’ve got a lot more wiggle room with a kayak than a boat.
No matter where you book your kayak tour, you will end up at Puerto Marmol to actually get your paddles in the water. Any tour booked from town will start with a vehicle transfer to this port, as paddling from town would be very tough unless you’ve got ultra muscles!
I think the biggest factor for kayak tours is the weather, and it will be entirely out of your control. You’d want a calm day to enjoyably kayak to the caves.
If we had had a nice sunny day, there’s nothing I would have loved more than to paddle around the stunning waters of Lago General Carrera, but with clouds overhead and rain forecast, the idea of spending 3 hours on choppy waters in a kayak just didn’t appeal (not after our 20 km hike in the pouring rain the day before in Valle Chacabuco).
Best tour companies
- 💎 Bahia Mansa Patagonia: this is the company that you will find directly at Puerto Marmol. They offer boat and kayak tours. We didn’t book in advance, we took a punt that we would be able to get on a tour without waiting too long, and we ended up getting on a boat within half an hour. You can get in touch with them via WhatsApp in advance to coordinate your tour and check if they have other departures running, if you’d prefer. They need a minimum of 5 people to run the boat tour (or you could pay more to run it with fewer). I’m not sure if the kayaking tour has the same minimum requirement, I’d say not.
- 💎 Aoni Expediciones: if you want to do a boat tour from town, this is an excellent, top-rated option. They offer the standard short tours that just visit the formations on the Puerto Rio Tranquilo side of the lake. They also offer an extended navigation that includes the formations in Puerto Sanchez.
- 💎 Kayaktal Expediciones: if you want a kayak tour from town, this looks like an excellent option! The reviews speak for themselves, the guide Mati looks like a legend, and they are focused on offering a unique, natural experience that showcases the special beauty of the Marble Caves.
What to bring
The tours to the Marble Caves only last 1 – 3 hours, so you don’t need to bring a lot. The main thing to remember is warmth and wet weather, as well as splashing from the boat.
- 🧥 Raincoat and pants
- ☔️ Dry bags and/or waterproof bag cover
- 🧣 Gloves, scarf/buff and beanie
- 😎 Sunglasses
- 📷 Camera or phone
- 💰 Cash (some tour companies don’t accept card)
Our experience at the Marble Caves
We cruised into Puerto Rio Tranquilo from the south, after an excellent stint at the Valle Chacabuco Sector of Patagonia National Park.
We arrived early enough in the day to visit the caves, so Puerto Marmol was our first port of call (pun intended!). The road down was nail-bitingly steep, with some tight curves and a few bumps. Nothing our 4×4 camper couldn’t handle, but I was white-knuckling the hand rest that’s for sure!
The weather was not on our side, and while it wasn’t raining yet, the sky was persistently grey. I was, of course, quite grumpy about this as I really wanted to see the lake in the glistening sun, illuminating the bright blue water in the caves. But the forecast was not looking good, with rain on the radar for the following days. It was a matter of now or never.
We hadn’t pre-arranged any tours, but we turned up at Puerto Marmol hoping there would be some other passengers booked and ready to go out on a boat. The kind lady at the tour desk told us there was another couple who were supposedly coming soon from town, and that once they arrived, we could head off.
We had a quick lunch in our Camper Travel Chile camper, and before we were even finished, a group of 7 of us had formed, meeting the minimum requirement of 5 passengers.
We did toss up the idea of kayaking, but the promise of rain (and some weary bodies after a huge hike the day prior) dissuaded us. If it were a brilliant sunny day, it would have been a different story!
I was prepared for any weather (as you should always be in Patagonia!), geared up in my rain pants, rain coat, gloves and plenty of layers. We added a life jacket to the mix and boarded the boat.
It was a small open-air panga boat that comfortably sat the 7 passengers, our captain and guide. The whole tour was in Spanish, but the guide spoke slowly for us and we got the gist of it all.
We set off, and the lake was much calmer than I expected, and the wind wasn’t too bad.
We travelled to the furthest section first, starting with the Cuevas de Marmol. Because it was April and the water level in the lake had lowered, we were able to cruise in and out of all the caves, lined up along the shoreline. We could tell the captain had done this once or twice before, his precision in getting the boat into very tight spaces without so much as bumping the side was incredible!
The patterns on the marble were so beautiful, and the water was so clear and blue. There’s just something about the contrast between white and blue, like white sand and blue ocean, it was so visually pleasing.
After the caves, we turned back towards the port and visited all the formations we had passed along the way. Next up was the Tunel de Marmol, where we actually sailed through a whole tunnel of marble. Our guide pointed out what different formations looked like – a dog, an elephant, a turtle – the obligatory guide stuff!
The finale of our tour was the two famous formations, the Catedral de Marmol and the Capilla de Marmol. We spent a long time circling both of these marble monoliths, getting a look from every angle. It was amazing to see how the erosion occurs from the wind and water, with enormous chunks of marble supported by thin columns that have been chiselled away over a period of 6,000 years.
The marble patterns got even prettier, the water got even bluer, and we could finally see what all the fuss was about. It was pretty incredible that this was all formed naturally over thousands of years.
After plenty of time to take photos and videos, we headed back to Puerto Marmol. It took less than 10 minutes to get back from the main formations, instead of the 30+ minutes it takes from town.
The whole experience was done and dusted in an hour. The sun didn’t come out, but the rain held off, and the ride was smooth and calm, with minimal wind and no choppy waves.
We could have taken a longer tour from town, but the extra time would have been spent zooming across the lake at high speed, not exactly enjoyable. We were very happy with our choice to go to Puerto Marmol.
Planning a trip to Puerto Rio Tranquilo
Don’t plan a trip just to the Marble Caves, plan a trip to Puerto Rio Tranquilo and the rest of the Carretera Austral! For more information about where to stay near the Marble Caves, other things to do around town and more detailed information about getting there, getting around, and the best places to eat, don’t forget to read our Puerto Rio Tranquilo guide.
🧊 Everything you need to know about Puerto Rio Tranquilo
Marble Caves of Patagonia: Worth it?
The Marble Caves were beautiful and unique and unlike anything else we saw in Patagonia.
I do understand the hype, and I can imagine they would be even more special on a bright sunny day when the lake’s water is illuminated.
They are definitely worth a visit, but only if you have the time to dedicate to seeing more of the surrounding area. This is not an attraction worth travelling for if you’ve only got a day or two, given its remote location and difficulty to reach.
The Marble Caves are undoubtedly beautiful, but spending a day or more travelling for a one-hour boat ride is not worth it in my opinion. Hang around in Puerto Rio Tranquilo for a few days, go and hike on the Exploradores Glacier or take a boat tour to the San Rafael Glacier, and then continue your journey along the epic Carretera Austral.
MORE PUERTO RIO TRANQUILO POSTS
- Puerto Rio Tranquilo, Chile Travel Guide: Marble & Ice
- Trekking on Glaciar Exploradores: Our Ice Hike Experience
The Comments
zidane
The Marble Caves are proof that some of the most beautiful places on Earth are often hidden. Located in such a remote area, it’s amazing to see how pristine and untouched they are. The light, the water, and the marble all combine to create something unforgettable.