Witness molten rivers and fountains of lava on a full-day guided hike from Reykjavik to Geldingadalur. This guided trek brings you as close as safely possible to Fagradalsfjall’s active flows while offering practical guidance for an unpredictable landscape.
More ways to explore the area's outdoor wonders
A low, sulfur-touched wind pushes across black glassy rock as the group climbs out of the valley, the smell of fresh lava still warming the air. On a clear day the molten rivers at the Fagradalsfjall fissure field throw orange light across a moonscape of jagged pahoehoe and sharp ʻaʻā — an elemental scene that both demands respect and rewards attention.
Difficulty
moderate
Duration
8 hours (full day)
Fitness Level
Suitable for hikers with steady aerobic fitness able to walk 8–12 km over uneven volcanic terrain; not recommended for poor cardiovascular health.
Wildlife
History
Fagradalsfjall’s 2021 eruption marked renewed activity on the Reykjanes Peninsula after centuries of dormancy, quickly drawing scientists and visitors to live geology.
Conservation
New lava fields are ecologically fragile; stay on established routes, avoid collecting rock, and follow guide instructions to protect regrowth and minimize erosion.
Reserve your spot on the Full-Day Hike to Geldingadalur Active Volcano from Reykjavik today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Start early or late for light and fewer people
Solar angle and crowd size change the experience — early morning or late afternoon reduces glare on lava and can increase solitude.
Wear stiff-soled hiking boots
The volcanic rock is sharp and uneven; ankle support and tough soles prevent slips and bruises.
Carry 2–3 liters of water and snacks
Full-day hiking and heat from nearby flows dehydrate quickly — bring extra electrolytes for longer exposure.
Follow the guide and heed closures
Lava fields are dynamic; stay within guided corridors and avoid crossing unofficial ground to reduce risk.
Stiff-soled hiking boots
Protects feet from sharp lava rock and provides ankle support on uneven ground.
Windproof, waterproof shell jacket
Shields against strong coastal winds and sudden rain common on Reykjanes.
Hydration system (2–3 L)
Sustains hydration for a full-day hike with limited water sources.
Crampons or microspikes
Useful in winter or early spring when snow and ice persist on trails.
winter