Head beyond the Golden Circle to the rugged Reykjanes Peninsula: crawl through lava tubes, watch mud pools breathe, and see the defensive walls built to protect the Blue Lagoon from recent lava flows. This active day trip pairs geology with up-close geothermal theater.
More ways to explore the area's outdoor wonders
The van drops you on wind-scoured black rock and the ocean is a low, salty line on the horizon. Steam hisses from the ground like an animal testing the air; sulfur tang rides the breeze and pulls you toward bubbling mud and acid-blue pools. A narrow opening leads underground — a lava tube scored by two separate eruptions, where you'll crouch, feel the basalt under your palms, and move like an explorer retracing volcanic history.
Difficulty
challenging
Duration
8–9 hours
Fitness Level
Moderate to fit — able to hike on uneven ground for several hours, stoop and crawl in caves, and handle coastal wind and cold.
Wildlife
History
The Reykjanes Peninsula has been intermittently volcanic for centuries; the ‘Reykjanes fires’ in medieval times and recent Fagradalsfjall eruptions show its continual activity.
Conservation
Stay on marked paths; fragile lichens and soil on lava fields recover slowly. Respect restricted geothermal areas and follow guide instructions to minimize impact.
Reserve your spot on the Reykjanes secret G spots - raw edition today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Wear sturdy boots
Lava fields and tube interiors are sharp and uneven—ankle-supporting hiking boots reduce injury risk.
Bring a headlamp and fresh batteries
Even with provided lights, a personal headlamp helps during extended tube sections and hands-free movement.
Expect strong winds and sulfur smell
Windproof outer layers and a buff or mask help; sulfur is normal near geothermal vents and harmless in short exposure.
Hydrate and pace yourself
This is an active 8–9 hour day with stooping and scrambling—carry at least 1–2 liters of water and snack often.
Sturdy hiking boots
Protects feet on sharp lava and slick, wet ground.
Waterproof, windproof shell
Reykanes wind and spray can be cold and persistent; a breathable shell keeps you comfortable.
Insulating mid-layer (fleece/down)
Temperatures change quickly between wind-exposed plateaus and sheltered tube interiors.
Headlamp with spare batteries
Hands-free lighting is critical in lava tubes even if guides supply lamps.