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Discover Iceland’s caves and hot springs on a small-group tour combining adventurous caving with relaxing geothermal soaking—an authentic, unforgettable experience.
Exploring Iceland’s raw natural beauty often means seeking out the land’s more unusual, less touristy sights. The Hot and Cold G Spots Challenge offers just that—a blend of thrilling underground adventures and soothing geothermal relaxation, all within a manageable day trip from Reykjavik. This tour is ideal for travelers craving a mix of outdoor exploration, physical activity, and authentic Icelandic scenery.
What truly makes this experience stand out is the small group format, which ensures personalized attention from your guide and a more intimate encounter with Iceland’s wild side. Plus, the inclusion of all necessary caving gear and the chance to unwind in natural hot springs provides fantastic value.
A potential consideration is the moderate physical fitness level required—some crawling and climbing are involved, so it’s not suited for those with mobility issues or very young children. This adventure suits curious, active travelers eager to discover Iceland beyond the well-trodden tourist paths.

This tour promises a full day of discovering Iceland’s volcanic landscape, starting with a journey just outside Reykjavik to the Reykjanes Peninsula. Over about four hours, you’ll explore two to four caves, depending on your group’s pace and physical ability. These caves, carved out over centuries by volcanic activity, offer a fascinating glimpse into Iceland’s geological history.
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The caves are a mix of easy walking tunnels and some requiring crawling or climbing—reviewers mention starting with the easiest for a reason. Guides are attentive, ensuring safety and providing all necessary caving equipment. They’re also eager to share their knowledge about the rock formations and the area’s volcanic past, which adds a layer of educational value to what is already a thrilling experience.
One reviewer praised their guide Damian for taking them to various caves and sharing detailed insights about the formations, making the experience both fun and informative. The caves are not overly commercialized, which means you’ll feel like you’re exploring Iceland’s wilderness rather than a tourist trap.
After conquering the caves, it’s time to relax. The Reykjadalur Hot Springs are a highlight of the day—imagine soaking in a natural thermal stream surrounded by breathtaking mountain views. The hot springs are located in a scenic valley, making the experience both soothing and visually stunning.
The two-hour stop here is perfect for unwinding sore muscles, and the included admission makes this a seamless addition. Many visitors find that soaking in these springs offers a true sense of connection with Iceland’s geothermal energy, which is both energizing and calming.

Reykjanes Peninsula (4 hours)
Getting to the caves from Reykjavik is quick and convenient, and the guide will tailor the experience based on your group’s capacity. The caves vary in difficulty, so the tour starts with the easier tunnels—great for beginners or those with limited mobility—and progresses to more challenging sections if desired.
Reykjadalur Hot Springs (2 hours)
The hot spring area is about a two-hour soak, giving plenty of time to relax and take in the scenery. The water temperature varies but remains comfortably warm for a satisfying soak. Many guests mention the picturesque valley and the energy boost from this geothermal dip as some of the tour’s best moments.
The tour begins at 8:30 am, giving you a full day to explore. Pickup is offered, and the entire experience is designed to be intimate, with group sizes capped at four travelers. This small group approach means more personalized attention and a relaxed atmosphere—ideal for those who prefer a more tailored experience.
All necessary caving equipment—such as helmets, headlamps, and protective clothing—is provided, removing the hassle of renting gear or bringing your own. The tour is priced at $270 per person, which, considering the unique activities, guide expertise, and included hot springs, offers good value for an adventurous day.
The reviews consistently praise the knowledgeable guides, especially Damian, who made the exploration both educational and fun. One reviewer called it a “10/10 experience” and emphasized that the caves were “fantastic.” Others appreciated the private, intimate nature of the tour, giving a sense of exclusivity that larger groups often lack.
Several travelers highlighted the stunning scenery and the delicious, simple Icelandic hot dogs served for lunch—an authentic touch that adds to the overall experience. The hot springs, in particular, seem to be a favorite for their natural setting and energy-restoring warmth.

This adventure is perfect if you’re seeking something different from Iceland’s typical sightseeing tours. It combines physical activity with scenic beauty, making it well-suited for adventurous travelers who enjoy exploring underground and relaxing in nature.
If you’re interested in geology, outdoor activities, and authentic geothermal bathing, this tour hits all those notes. It’s also ideal for small groups, meaning you’ll get more guidance and a more personalized experience.
However, keep in mind the moderate fitness requirement—you should be comfortable with a bit of crawling and climbing—and be prepared for potentially dirty clothing. If you’re looking for a family-friendly or very easy-paced option, this might be a bit challenging.
In sum, this tour offers a balanced mix of adventure, education, and relaxation, making it an excellent choice for curious, active travelers who want to see a different side of Iceland.

Is pickup offered for this tour?
Yes, pickup is available, making logistics easier for travelers staying in Reykjavik.
What is the maximum group size?
The tour is limited to 4 travelers, ensuring a more personalized experience.
What should I wear?
Heavy-duty clothing that can get dirty while caving is recommended, along with hiking shoes for comfort and safety.
How long does the tour last?
The entire experience runs approximately 6 to 7 hours, including travel, exploration, and relaxation in hot springs.
Are all caving equipment provided?
Yes, all necessary gear such as helmets, headlamps, and protective clothing is included.
What level of fitness is required?
A moderate fitness level is needed due to some crawling and climbing involved in the caves.
Can I cancel if my plans change?
Yes, free cancellation is available up to 24 hours before the tour starts.
What is the price of the tour?
It costs $270 per person, offering good value considering the activities and inclusions.
Is this tour suitable for children?
It’s best suited for travelers comfortable with moderate physical activity; very young children or those with mobility issues may find it challenging.
This tour is a genuine gem for anyone looking to combine Iceland’s volcanic underground with relaxing geothermal springs, all within a small, intimate setting. Expect a day filled with discovery, physical activity, and memorable scenery—an experience that will leave you with stories to tell long after your trip ends.