The Golden Circle with Extra G showcases the natural wonders of Iceland. From the dramatic tectonic plates at Thingvellir to the cascading Gullfoss waterfall and the erupting Strokkur geyser, this tour promises an immersive experience. However, the true gem lies beneath the surface – a 9,000-year-old lava cave that reveals the geological history shaping this extraordinary landscape. Prepare to be captivated by Iceland’s blend of breathtaking scenery and intriguing geological formations.
Key Points

- Explore the geological wonders of the Golden Circle, including the Giantess (Strokkur) Geyser, which erupts up to 40 meters high every 5-10 minutes.
- Discover the Gargantuan (Gullfoss) Waterfall, a majestic two-tiered cascade plunging 32 meters and offering breathtaking views from various vantage points.
- Explore the Gargantuan geological rift at Thingvellir National Park, a UNESCO-listed site showcasing the rifting of tectonic plates along the Mid-Atlantic Ridge.
- Venture into the Gargantuan lava caves, where 9,000-year-old formations sculpted by nature display vibrant colors and textures.
- Set out on a Grandiose journey through Iceland’s geological history and natural wonders, experiencing the power of nature at each stop along the Golden Circle.
A Journey Through Thingvellir

Why begin the tour at Thingvellir National Park? This UNESCO-listed site holds immense geological and historical significance.
Situated on the Mid-Atlantic Ridge, the park showcases the dramatic rifting of the North American and Eurasian tectonic plates. Visitors can walk along the rift valley, observing the shifting landscape and peering into the crystal-clear waters of Silfra fissure.
Thingvellir National Park showcases the dramatic rifting of tectonic plates, with visitors exploring the rift valley and Silfra fissure’s crystal-clear waters.
Thingvellir also served as the location of Iceland’s ancient parliament, the Althing, from 930 to 1798 AD.
Today, the site offers a captivating blend of natural wonder and cultural heritage, setting the stage for an unforgettable journey through Iceland’s Golden Circle.
Looking for more options in Reykjavik? We've reviewed plenty of other experiences.
Exploring the Grandeur of Gullfoss
Departing from the rift valley of Thingvellir, the journey continues to the majestic Gullfoss waterfall.
This thundering, two-tiered cascade plunges 32 meters (105 feet) into a rugged, canyon-like gorge. Gullfoss, the "Golden Falls," owes its name to the golden hue of the water as it crashes against the rocks.
Visitors can witness the power of nature through three distinct vantage points:
-
The upper viewing platform, providing a panoramic view of the waterfall’s majesty.
-
The lower platform, allowing a closer look at the cascading rapids.
-
The trail leading to the canyon’s edge, for a breathtaking perspective of the waterfall’s full height.
Witnessing the Wonders of Strokkur

From the thundering cascade of Gullfoss, the journey continues to the geothermal fields of Strokkur.
This active geyser erupts every 5-10 minutes, sending a towering plume of steaming water up to 40 meters into the air. Visitors stand mesmerized, cameras at the ready, waiting to witness this natural phenomenon.
Strokkur is part of the Haukadalur geothermal area, which also features other hot springs and fumaroles, showcasing the incredible power and activity bubbling beneath the surface.
The Haukadalur geothermal area features hot springs and fumaroles, showcasing the incredible power and activity bubbling beneath Iceland’s surface.
This lively display of Iceland’s volcanic geology is a highlight of the Golden Circle, offering a thrilling and unforgettable experience.
Unveiling the Mysteries of the Lava Cave

A 9,000-year-old lava cave serves as the next stop on the Golden Circle tour. Donning helmets and headlamps, travelers descend into the underground wonderland, immersed in its geological history.
The experience offers three highlights:
-
Witnessing the intricate rock formations, sculpted by the relentless forces of nature over millennia.
-
Marveling at the vibrant colors and textures of the cave walls, a testament to Iceland’s volcanic origins.
-
Appreciating the eerie silence and solitude, a stark contrast to the roaring waterfalls and geysers above ground.
This lava cave exploration adds a captivating, subterranean dimension to the Golden Circle adventure.
Frequently Asked Questions

- Reykjavik Food Walk – Local Foodie Adventure in Iceland
- Silfra: Snorkeling Between Tectonic Plates – Meet on Location
- South Coast Adventure From Reykjavik
- Icelandic Horseback Riding Tour Including Pick up From Reykjavik
- Golden Circle With Kerid Volcanic Crater Day Trip From Reykjavik
- The Lava Tunnel Tour – Raufarhólshellir
Can I Bring My Own Food on the Tour?
The tour details indicate that a lunch at a tomato greenhouse is included in the tour. However, participants are not explicitly prohibited from bringing their own additional food or snacks if desired.
What Is the Group Size Limit for This Tour?
The group size for this tour is limited to a maximum of four travelers, providing a small-group experience and a more personalized tour. This allows for an intimate and tailored exploration of Iceland’s Golden Circle highlights.
Is There an Option to Extend the Tour Duration?
The tour offers a small-group experience with a maximum of four travelers. However, there is no information provided about the option to extend the tour duration beyond the standard itinerary.
Do I Need to Bring Any Special Equipment?
The tour provides necessary equipment such as crampons, helmets, and headlamps for the volcanic cave exploration. Participants do not need to bring any special equipment, as these essentials are included in the tour package.
Can I Request a Private Tour Instead of a Small Group?
Yes, this tour offers private options. Travelers can request a private tour instead of the small-group experience, subject to availability and an additional fee. Private tours provide a more personalized experience with the guide’s undivided attention.
The Sum Up

The Golden Circle with Extra G provides a comprehensive and captivating exploration of Iceland’s natural wonders. From the tectonic rifts of Thingvellir to the thundering cascades of Gullfoss and the eruptions of Strokkur geyser, this tour offers a unique opportunity to take in the country’s geological history. The added experience of exploring a millennia-old lava cave further enhances the journey, delivering an unforgettable adventure through Iceland’s remarkable landscape.
More Private Tours in Reykjavik
- Reykjavik: Private Icelandic Viking Age Walking Tour
- Private Combo Tour from REY: Golden Circle and South Coast
- Private Reykjavík Tuk Tuk Extended Tour
- Reykjavik: The Icelandic Woman Private Walking Tour
- Reykjavik: Iceland’s role in WWII – Private Day Trip
- Reykjavík: Private LGBTQ+ Walking Tour with a Local Guide
More Tours in Reykjavik
- Iceland: 3-Day Tour with Golden Circle and South Coast
- Reykjavik: Glacier Lagoon, Boat Ride & Diamond Beach Tour
- Reykjavik: Golden Circle Tour & Laugarás Lagoon Entry
- South Coast Day Tour with Horse Riding(optional)
- From Reykjavik: Day Tour to Landmannalaugar in a 4X4
- Reykjavik: Highlands & South Coast Super Jeep Tour
More Tour Reviews in Reykjavik
- Iceland: 2-Day Ice Cave, Glacier Lagoon & Northern Lights
- Iceland: 3-Day Tour with Golden Circle and South Coast
- Reykjavik: Glacier Lagoon, Boat Ride & Diamond Beach Tour
- 7-Day Small Group Journey Around Iceland
- Reykjavik: Golden Circle Tour & Laugarás Lagoon Entry
- Iceland: 4-Day Ice Cave, Glacier Lagoon & Northern Lights
Still browsing? Here are more Reykjavik experiences we've covered recently
- The 4 Top Lunch Experiences In Reykjavik: Which Is Best?
- Reykjavik’s 6 Top Food Tours (With Prices)
- You’ll Love These 12 Spa & Hot Springs Experiences In Reykjavik
- 14 Best Tours In Reykjavik (With Prices)
- The 10 Most Popular Walking Tours In Reykjavik
- We Rank The 14 Best Tours & Experiences In Reykjavik
- Which Reykjavik Photography Experiences To Choose? We Rank The 13 Best
- Reykjavik’s 5 Top Massage & Relaxation Services
- Reykjavik’s 5 Best Full-Day Tours (With Prices & Reviews)
- 14 Fantastic Hiking And Trekking Tours In Reykjavik
- 9 Best Cruises And Boat Tours In Reykjavik (With Prices)
- The Top 7 City Tours In Reykjavik
