Explore lava caves carved a thousand years ago then visit Hellisheiði to learn how Iceland turns fire and steam into power. This full-day trip blends hands-on caving with energy history and practical outdoor guidance.
More ways to explore the area's outdoor wonders
A wind-whipped plain of black rock opens under a low northern sky, and you step from the van onto a thousand-year-old lava field that still seems to be breathing. The ground crunches with loose scoria; tongues of basalt form ridges and hollows that hide tunnels and chambers. You move slowly, headlamp cones cutting into darkness as the caves welcome you, each chamber a different phase of the island's restlessness.
Difficulty
moderate
Duration
6–7 hours
Fitness Level
Moderately fit: able to walk uneven terrain for several hours and perform short low-crawl sections.
Wildlife
History
The lava field is roughly 1,000 years old; modern geothermal development at Hellisheiði helped transition Iceland to predominantly renewable power in recent decades.
Conservation
Stay on marked paths and follow guide instructions—lichen and newly formed soils are fragile and recover very slowly from foot traffic.
Reserve your spot on the Nature's forces on G levels today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Sturdy footwear
Choose ankle-supporting hiking boots with good tread—lava fields are uneven and can be sharp underfoot.
Layer for wind and wet
Bring a waterproof outer layer and insulating mid-layer; coastal volcanic weather changes quickly.
Light and spare batteries
Though guides supply headlamps, carry a small backup headlamp or extra batteries in case of longer tunnel crawls.
Respect fragile rock and lichen
Stick to guide instructions inside caves and on lava to avoid damaging delicate formations and biological crusts.
Sturdy hiking boots
Support and protection on jagged lava and wet ground.
Waterproof insulated jacket
Shields from wind and rain common in Icelandic highlands.
fall
Gloves and warm hat
Keeps hands warm during exposed sections and when handling gear.
winter
Spare headlamp or batteries
Backup light for cave passages and low-light conditions.