Review · THERMAL BATHS AND SPAS
Embalse el Yeso and Termas del Plomo in semi-private 4×4
The best part of this day is the contrast: you start in Santiago and soon trade city streets for the high Andes, where Embalse El Yeso reflects snowy peaks and Termas del Plomo offers a warm soak beneath the mountains. I like the small maximum of four people and the fact that breakfast and lunch are prepared fresh on the day.
I also like that the outing avoids long walks and packs two major mountain stops into one day. The main drawback is the narrow operating season and weekday schedule, plus the early 7:00 a.m. start and weather-dependent route. At $250 per person, this is a splurge, but it includes transport, meals, entrance tickets, and a very personal format.
Key points to know before booking

- Two very different Andes stops: Pair the blue waters and high peaks of Embalse El Yeso with a soak at Termas del Plomo.
- A true small-group outing: The 4×4 carries no more than four people, allowing more room for questions and schedule flexibility.
- Meals are part of the experience: Breakfast is served near the reservoir, followed by a fresh barbecue or vegetarian Andean-style lunch.
- Little physical exertion: You do not need to plan for long hikes, though you should be ready for a full day in the mountains.
- A seasonal weekday trip: It runs from late November to about May, depending on weather, from Monday through Friday.
- Bring your bathing gear: Pack a swimsuit, towel, and slippers for the thermal pools.
From Santiago into Cajón del Maipo

Your day begins at 7:00 a.m. and heads toward Cajón del Maipo, the mountain valley that leads into the Andes east of Santiago. The route is not just a transfer to the hot springs. The changing views are a central part of the day, with the city giving way to broad mountain scenery and the Valle del Yeso.
The 4×4 format matters here. This is not a large coach outing with a fixed crowd and a quick stop at a viewpoint. With a maximum of four people, you can ask questions, hear explanations about Santiago and the surrounding region, and spend less time waiting for a group to gather. Guides Diego, Juan, and Patricio are specifically associated with warm service, safe driving, regional explanations, and, in some cases, Portuguese-language help.
The drive also makes the early start sensible. You have roughly 10 hours for the full outing, and the route reaches places that deserve unhurried time. I would not book this as a casual half-day add-on. It is a full mountain day, with much of its value coming from the combination of transport, meals, scenery, and time at the springs.
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Breakfast beside Embalse El Yeso

The first main stop is Embalse El Yeso, where you have about an hour and a half. The reservoir sits among the central Andes, with mountain peaks and, depending on conditions, snow and glacier views forming the backdrop. This is the stop for taking in the scale of the area rather than rushing through a single photo point.
Breakfast is served in an area suited to the setting. That detail changes the feel of the stop. Instead of buying a snack at a roadside shop and moving on, you can sit with food and look across one of the region’s most striking mountain scenes. The meal is included, as are local taxes and the entrance ticket.
You should keep expectations practical. The experience is built around views, a meal, and fresh mountain air, not a long walk or a guided trek. The tour specifically avoids demanding physical effort, so you can enjoy the reservoir even if hiking is not your main interest.
The weather can shape this stop. Clear conditions should give you the best sightlines, while poor weather can lead to cancellation or a change of date. Since the route runs in a high mountain setting, I would keep your schedule flexible and avoid booking this on the final day of a tightly timed Santiago visit.
Termas del Plomo beneath San José
After the reservoir, the outing continues to Termas del Plomo, the day’s most unusual stop. You have about three hours here, including time for a thermal bath and lunch. The water is heated by the San José volcano, creating the memorable sensation of sitting in warm water while looking toward the surrounding Andes.
The appeal is not a polished spa complex. This is a mountain hot-spring experience, valued for its setting and sense of distance from the city. You can expect a simple, outdoors-focused stop where the surrounding peaks, rivers, wind, and local plants and wildlife are part of the experience.
Bring the items you need to enjoy the water: a swimsuit, towel, and slippers. The practical details matter because the tour does not list these items as provided. You will also want a day bag that keeps those things easy to reach rather than buried under breakfast and lunch supplies.
The water is described as warm rather than extremely hot. That is useful to know if you are expecting a very intense thermal bath. The attraction is the setting and the chance to relax in naturally heated water, not a long spa treatment or a series of elaborate pools.
A fresh Andean lunch at the springs

While you enjoy the thermal waters, the team prepares lunch. The meal can be a barbecue or a vegetarian option, but you should confirm your preference in advance. Food is prepared on the day of the trip with fresh produce, which gives the stop a more personal feel than a standard packed lunch.
The barbecue option fits the mountain setting, while the vegetarian meal makes the tour workable for people who do not eat meat. Still, do not leave dietary needs until the morning of departure. The supplied details confirm barbecue and vegetarian choices, but they do not promise a wider list of special diets.
Lunch is one reason the $250 price deserves a closer look. You are not paying only for a ride to a viewpoint. The fee includes breakfast, lunch, local taxes, and tickets for both Embalse El Yeso and Termas del Plomo. You are also paying for a vehicle and guide serving no more than four people.
That does not make it a budget trip. If you mainly want a quick photograph of El Yeso, a cheaper group excursion may be enough. If you want a small party, a meal prepared in the mountains, time at the hot springs, and a guide who can adapt the day to your interests, the cost is easier to justify.
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Why the four-person limit matters

The small group is the clearest difference between this outing and a standard coach tour. With up to four people, the vehicle does not need to make a long chain of hotel stops, and the guide can give more direct attention to your group.
That format also helps during the mountain portions. You can ask for explanations about the Andes, Santiago, and the area around Cajón del Maipo without trying to be heard over a large crowd. Past outings with Diego, Juan, and Patricio have been noted for careful driving, friendly attention, and strong regional explanations.
The word semi-private is important here. You get a very small group, but the experience is not necessarily exclusive to just you and your companion. If you are a couple, family, or group of friends, four seats may feel close to private. If you are booking alone, you may share the vehicle with other people.
The provider also has Portuguese-speaking guides, according to the supplied information. That can be useful if Spanish is not comfortable for you and Portuguese is your stronger language. Guide assignment is not specified at booking, so you should ask who will lead your date if language support is important.
The physical demands and mountain conditions

This is one of the easier ways to see the Andes near Santiago from a physical point of view. The tour does not include long walks or strenuous activity, and most of the day is spent riding, sitting for meals, enjoying views, and relaxing in the thermal water.
That does not mean the day is effortless. You will spend many hours in a 4×4 and in an exposed mountain environment. Bring clothing that can handle changing conditions, even though the official details do not list a required clothing system. You should also be comfortable with the possibility that weather affects the route.
The operating window is from the end of November to approximately May, depending on conditions. Trips run Monday through Friday, which limits options for people with a short weekend in Santiago. Children under seven cannot join, while most other people can participate.
Because the tour depends on good weather and a minimum number of bookings, a cancellation is possible. If weather or the minimum group size prevents departure, you are offered another date or a full refund. That policy is helpful, but I would still avoid placing this outing on a day when you have a flight or an important connection afterward.
Who will get the most from this outing

I would choose this tour if you want a strong taste of the Andes without committing to a hike. It suits couples, families with children aged seven or older, small friend groups, and anyone who prefers a guide-led day rather than arranging a vehicle and mountain route independently.
It also suits people who value food and conversation as part of a day outdoors. Breakfast beside the reservoir and a fresh lunch at the springs give the schedule a social rhythm. You are not simply checking off two stops and returning to Santiago.
The tour is less suitable if you want a low-cost excursion, a Saturday departure, or a serious trek. It is also not the best choice if you need complete control over the schedule or dislike a long day in a vehicle. The 10-hour duration is a feature for some people and a burden for others.
Photography-minded visitors should find plenty to work with, from the reservoir and mountain peaks to the thermal pools and volcanic setting. Still, weather controls what you see. Do not judge the value only by the promise of glacier views, because conditions can change quickly in the Andes.
What to pack for the 10-hour day

Keep your swimsuit, towel, and slippers within easy reach. You will also want practical layers for a mountain day, though the supplied trip details do not specify a dress code or equipment list.
A small bag is useful for personal items while the team handles the food and route. Since meals are included, you do not need to plan around buying breakfast or lunch during the excursion. If you have dietary needs beyond a standard vegetarian meal, confirm them before departure.
You should also arrive ready for the 7:00 a.m. start. The early hour is part of the trade-off for fitting the reservoir, hot springs, meals, and return journey into one day. The booking confirmation is provided at the time of reservation, so check its meeting instructions carefully.
Free cancellation is available up to 24 hours before the start time for a full refund. Changes or cancellations made less than 24 hours before departure are not accepted for a refund. The cutoff uses local time in Santiago.
My call on the value
At $250 per person, this is not a bargain tour. It is a high-priced day trip built around a very small group, a 4×4, two included meals, entrance tickets, and a guide-led route into the Andes.
I think the price works best for two to four people who want comfort, personal attention, and a full day outside Santiago. The strongest features are the four-person limit, the thermal bath beneath the mountains, and meals made by the team rather than generic food purchased along the road.
You should book it if those details matter more to you than finding the lowest possible fare. The weekday schedule, seasonal operation, weather risk, and early start are real limits. If you can accept them, this gives you a well-rounded mountain day with little walking and plenty of time at the two main sites.
FAQ
How long does the tour last?
The experience lasts approximately 10 hours.
What time does the tour start?
The start time is 7:00 a.m.
How many people can join the tour?
The tour has a maximum of four people.
What places are included?
The route enters Cajón del Maipo and Valle del Yeso, with main stops at Embalse El Yeso and Termas del Plomo.
Are meals included?
Yes. Breakfast and lunch are included. Lunch can be a barbecue or a vegetarian meal, and you should confirm your preference in advance.
Are entrance tickets included?
Yes. Tickets for Embalse El Yeso and Termas del Plomo are included.
Can I swim in the thermal waters?
Yes. You have time for a thermal bath at Termas del Plomo. Bring a swimsuit, towel, and slippers.
Is the tour physically demanding?
The tour does not include long walks or significant physical effort, and most people can participate. Children under seven cannot join.
When does the tour operate?
It operates from the end of November to approximately May, depending on weather conditions, and runs from Monday through Friday.
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