Fagradalsfjall Volcano Tour

Where Things Stand This Month

No eruption is under way anywhere on the Reykjanes peninsula. The last one started on 16 July 2025 at the Sundhnúkur crater row and stopped on 5 August 2025, three weeks later. That was the twelfth eruption since March 2021 and the ninth at that particular row of craters.

Fagradalsfjall itself has been quiet for longer. Its third and final eruption ended on 5 August 2023. Since December 2023 the magma has taken a different route to the surface, about 6 km northeast, next to Grindavík.

Quiet does not mean finished. The Icelandic Meteorological Office reports roughly 27.5 million cubic metres of magma accumulated under Svartsengi since mid-July 2025, with the ground still lifting at a steady rate. Their published assessment names a new dike intrusion, and possibly another eruption, as the most likely next step. Nobody can date it. What that means for a visit is simple enough: book the tour you want, and check the operator's message the morning you go.

So Can You Still See Lava at Fagradalsfjall?

Not flowing, and not glowing. Anyone selling you a photograph of orange lava as a picture of what you will see this month is selling a photograph from 2021.

What you get instead surprises most people more than they expect. The 2021 flow covers 4.8 square kilometres of ground that was grass and moss five years ago. Walk onto the marked edge of it and the surface is black, ropey, sharp underfoot and split by cracks that still breathe warm air. One traveller on the July 2026 hikes put it plainly: no actual lava, but walking on the cooled lava field, with a guide who lived through the eruption showing videos of what the same spot looked like on fire.

Moss has started on the oldest parts and stops dead at the 2023 boundary, so you can read the sequence of eruptions off the ground by colour. From the air the line is sharper still. A helicopter passenger this July described it as razor-sharp: untouched nature on one side, scorched ground on the other.

Three Eruptions at Fagradalsfjall

Fagradalsfjall is a tuya: a flat-topped mountain built up under an ice sheet, 385 metres high, sitting on a fissure system rather than a single crater. The name translates as mountain of the beautiful valley, which held up until the valley filled with lava.

The first eruption opened on 19 March 2021 in Geldingadalir and ran 181 days, closing on 18 September. It drew a crowd of about 350,000 people to a hillside 50 km from the capital and produced 151 million cubic metres of lava across 4.8 square kilometres.

The second came on 3 August 2022 in Meradalir, the valley immediately north, and lasted 19 days on 12 million cubic metres. The third opened at Litli-Hrútur on 10 July 2023, ran to 5 August, and added 15.9 million cubic metres over 1.5 square kilometres. Moss fires from that one shut the footpaths for days at a time.

All three sit within a few kilometres of each other, which is why one trail network reaches the lot.

Why the Action Moved to Grindavík

In December 2023 the ground opened again, this time along the Sundhnúkur crater row, about 6 km northeast and directly above the town of Grindavík. Nine eruptions have come from that row since. The town was evacuated, houses cracked along a fissure that runs through it, and engineers pushed up earth barriers to steer the lava around both the town and the Svartsengi power plant that heats the region.

Guides on the minibus tours drive you along those barriers and stop where the flow piled against them. Travellers coming off the July 2026 tours describe Grindavík as a ghost town, and the guides who grew up there tell you which house belonged to whom. That stretch of the route lands harder than the lava does.

The Five Marked Paths

Trail A, marked pink, is the classic. It runs 6–8 km one way depending on where you park, takes about 2 to 2.5 hours each way, and delivers you to the 2021 and 2022 eruption sites. Most guided hikes on this page follow it or a section of it.

Trail B, dark blue, points at the newer ground. Its first viewpoint sits 4.7 km out and the second at 6.1 km, both looking over the Sundhnúkur lava.

Trail C, green, climbs Langihryggur ridge about 4 km one way. It is the only viewpoint that takes in the 2021, 2022 and 2023 fields at once, which makes it the best single stop for photographs.

Trail E runs to Meradalir and Litli-Hrútur at 18–20 km round trip and 5 to 6 hours of walking. Treat it as a full day with weather to spare.

The Nátthagi paths, yellow, run about 2 km one way. If you want to stand next to cooled lava without committing an afternoon, that is the one.

How Long the Hike Really Takes

Allow half a day whichever path you pick. The distances read gentle on paper and walk harder than they read, because the surface is loose scree in places and hardened lava in others, and the wind decides your pace more than the gradient does.

Guided hikes budget 4 to 6 hours in total, and the drive from Reykjavík eats an hour of that at each end. Groups move at the speed of the slowest walker, which several reviewers count as a feature: one party this July hiked with a 70-year-old relative and reported no rush at any point.

Trails can close at short notice when gas readings climb or the ground starts moving again. Operators cancel and refund when that happens rather than send you up regardless.

The Drive From Reykjavík and Keflavík

The volcano sits about 50 km from Reykjavík, 32 km from Keflavík airport and 10 km from Grindavík, inside the Reykjanes UNESCO Global Geopark. From the capital, take Route 42 south across the peninsula, then Route 427 west toward Grindavík and east again to the car parks. Reckon on an hour.

From the airport it is shorter: Route 41 onto Route 43 toward Grindavík, 20 to 30 minutes. Plenty of people fit the hike into a layover, and the Blue Lagoon is about 15 minutes away when they finish.

No scheduled bus serves the trailhead. That leaves a rental car or a guided tour with pickup in Reykjavík, and the pickup is what most people choose once they have priced a car for one day.

Parking at P1 and P2

Two car parks serve the trail network, and both charge the same.

• P1 Geldingadalir is the main one, at the foot of Trail A and the Nátthagi paths
• P2 Stóri-Leirdalur sits a little further along and puts you nearer Trail C
• Parking costs 1,000 ISK, about 8 USD, and covers 24 hours
• Pay through the Parka app or on parka.is; there is no barrier and no attendant
• Roadside parking is not allowed anywhere along Route 427
• Neither car park has a shop, a café or drinking water

Guided Tour or Self-Drive to the Volcano

Both work. The sums land differently depending on how many of you there are and how much you want explained.

Driving yourself costs a day's car hire plus fuel plus 1,000 ISK for the car park, and you set your own turnaround time. What you give up is the commentary, and on this particular hike the commentary is most of the value. The guides are geologists who study the volcano, or Grindavík residents who were evacuated from it. Neither is something you can read off a trail sign.

The hybrid exists too. One operator lets you meet the guide at the site in your own car, which travellers this July reported working well.

Staying Safe on the Lava Field

With nothing erupting, the hazards are the ground and the air. Neither is dramatic, and both are worth taking seriously.

The crust of a young flow can be hollow. It looks like solid rock, it holds a crow, and it breaks under a person. Rock beneath a recent flow can still sit around 1,200 degrees Celsius, which is the reason every guide repeats the same instruction: stay on the marked path and off the lava.

The air hazard is sulphur dioxide, which seeps out of cooling lava and pools in hollows when the wind drops. Check the Icelandic Meteorological Office gas forecast and safetravel.is before you set out. If you catch a sulphur smell on the trail or your chest tightens, walk out and move upwind.

• Check the gas forecast on vedur.is and conditions on safetravel.is the morning you go
• Stay on the marked paths; the lava crust is hollow in places
• Move upwind and leave if you smell sulphur or start coughing
• Expect sections to close at short notice when readings climb
• Tell someone your route if you are walking without a guide

What to Wear and Bring on the Volcano Hike

Hiking boots with ankle support are not a suggestion here. The lava is uneven, rocky and sharp enough to open a trainer, and the descent on wet rock is where people slip.

The rest is standard Icelandic packing: wind and waterproof layers whatever the forecast says, because the forecast on this peninsula has a half-life of about two hours. Reviewers who hiked in July still described constant rain, wind and mist, and one from northern Canada was cold in what she thought was summer kit.

• Hiking boots with ankle support, worn in before you fly
• Waterproof jacket and trousers, plus a warm mid layer
• Hat and gloves, including in July
• Water and food; there is nothing to buy at either car park
• Sunglasses and sun cream for the glare off black rock
• Spikes or micro-crampons between November and April
• A charged phone, with the Parka app installed for parking

Best Time of Year to Hike Fagradalsfjall

The trails stay open year round, and the number that decides your day is daylight. Reykjavík gets about 21 hours of daylight around the June solstice and a little over 4 hours around the December one. Between those extremes sits every practical consideration about this hike.

June to early September gives you snow-free ground, evening light for the walk out and enough margin that a slow group finishes in daylight. It also brings the crowds and the higher tour prices.

May and late September work well if you can take changeable weather. Between November and March the hike becomes a winter walk: ice on the descent, spikes on your boots, and a start time chosen so you are down before dark. Some operators shorten the route in those months. The upside is an empty trail and, on a clear night, aurora over black ground.

What Else Fits Into the Same Day

The peninsula packs a lot into a short drive, which is why the minibus tours cover ground the hikes never touch. If you are driving yourself, any two of these fit around the walk.

• Blue Lagoon, about 15 minutes from the car parks and the obvious place to put sore legs
• Seltún at Krýsuvík, boiling mud pools and sulphur flats on a boardwalk, a stop on both minibus tours
• Kleifarvatn, the lake the volcano circle tour photographs on the way back
• Gunnuhver, the peninsula's loudest steam vent, out at the western tip
• The Bridge Between Continents, a footbridge across the rift between the North American and Eurasian plates
• Grindavík itself, where the harbour restaurants reopened before much else did