Chasing Lava: Sundhnúkur Crater Row Eruption Travel Guide (Summer 2025)

As of early August 2025, the eruption at Sundhnúkur Crater Row is ongoing but relatively steady. Activity has actually declined from its initial peak – only one crater on the original fissure is currently active, after the northern crater’s activity ceased on July 22[Source]. The eruptive output is moderate and lava flows are contained to uninhabited valleys, slowly creeping eastward into the Fagradalsfjall area without threatening infrastructure[Source]. In short, the volcano is putting on a reliable show for visitors while keeping its distance from towns.

Safety First: Even with its “friendly” behavior, this volcano demands respect. Icelandic authorities emphasize that the eruption site itself is off-limits to the public for now[Source]. Unstable ground, sudden gas emissions, and hot lava make it too dangerous to walk right up to the crater. Instead, visitors are asked to enjoy it from designated viewing areas a safe distance away – we’ll cover those in the next section. Always obey closures and signs; they’re there to protect you from hazards like sudden lava outbreaks or toxic fumes.

One of the biggest concerns is volcanic gas pollution. This eruption is belching out sulfur dioxide (SO₂) and fine particulate haze (SO₄) that can drift with the wind[Source]. The gases aren’t usually visible, and you might not smell anything before they irritate your lungs or eyes. Authorities have reported volcanic haze and SO₂ being detected far from the crater, even in towns on the Reykjanes Peninsula and beyond[Source]. Pay attention to gas alerts: check the IMO’s gas dispersion forecast and real-time air quality maps (loftgaedi.is) before and during your trip[Source]. If the forecast shows winds blowing gas toward an area, you may need to limit outdoor activity or wear a mask. The Icelandic Meteorological Office and Environment Agency post daily updates – for example, on some July days the gas plume was expected to drift over towns like Keflavík and even parts of the capital area[Source].

Official guidance for August 2025 is that travelers can continue their plans normally as long as they stay informed and exercise caution[Source]. There is no impact on flights (Keflavík International Airport is operating normally), and outside the eruption zone life goes on as usual[Source]. So don’t panic – Iceland is still safe to visit – but be volcano-smart. If you’re in the vicinity of the eruption and notice sulfur smells, haze, or throat irritation, leave the area and get to fresh air. Vulnerable individuals (children, pregnant travelers, anyone with asthma or heart conditions) should avoid exposure altogether on bad air days[Source]. Keep your car windows closed when driving near the plume, and use your vehicle’s recirculate air setting if needed[Source]. Most importantly, stay behind marked safety perimeters. Iceland’s search and rescue teams (ICE-SAR) are on site keeping an eye on visitor safety – follow their instructions. No selfie is worth singed boots or worse!

The Sundhnúkur crater row eruption is located on the Reykjanes Peninsula in southwest Iceland, not far from Keflavík Airport and the town of Grindavík. In fact, Sundhnúkur is a row of craters just outside Grindavík in the Svartsengi volcanic system[Source] – the same region where the famous Blue Lagoon is located. This makes it relatively easy to reach from Reykjavík and other tourist hubs.

The simplest way to get there is by car. From Reykjavík, it’s about a 45-50 minute drive (roughly 50 km) via Route 41 (Reykjanesbraut) heading southwest toward Keflavík, then Route 43 toward Grindavík. All the main roads are paved and currently open[Source]. As you approach Grindavík, you’ll likely see the eruption’s steam or glow on the horizon. Parking: Follow the signs or officials’ directions to designated parking areas near the trailheads or viewing points (in previous eruptions, large gravel parking lots were set up on side roads). Do not park randomly on highways or in mossy lava fields. Police have explicitly instructed visitors not to park on the shoulder of Route 41 or other main roads for safety[Source]. Use the established lots and be prepared for a parking fee (during past eruptions, local landowners charged fees at trailhead lots – bring some cash or card just in case).

There is no direct public bus to the volcano site, but you can get part of the way. Buses run from Reykjavík to Keflavík and Grindavík; from there, however, you’d need a taxi or a lot of walking to reach the viewing trails. Given the logistical hassle, most travelers either rent a car or join a tour. If you don’t drive, see the next section on tours – many will pick you up in Reykjavík or Keflavík.

A convenient new option this summer is the “Volcano Shuttle” Super Jeep service – a few tour companies are running specialized 4×4 shuttles that will take you off-road right up to the new lava fields and viewpoints[Source]. For example, one operator offers daily departures in modified jeeps, allowing you to skip the long hike and get within a safe distance of the eruption in about 90 minutes[Source]. These shuttles aren’t cheap, but they’re a thrilling ride and save your legs. Alternatively, standard tour buses won’t go off-road, but during previous eruptions some bus companies ran shuttles to the main trailhead from Reykjavík. It’s worth checking with Reykjavík Excursions or other tour providers if any temporary bus service is available. Of course, classic guided tours (see next section) will handle all transport as well.

If you rent a car, a 2WD vehicle is usually fine to reach the parking areas in good weather. The roads to Grindavík and near Fagradalsfjall are paved. But if you plan to explore other parts of Reykjanes’s rugged terrain or if there’s any chance you might drive on rougher tracks for a closer look, consider a 4×4. Always check Iceland’s road conditions website for any closures (especially if earthquakes have affected local roads). And fill up on gas before heading out – gas stations are available in Keflavík and Grindavík.

Should you join a guided volcano tour or go independently? It really depends on your comfort level and budget. Here’s a breakdown to help you decide.

Going with an experienced guide can greatly enhance both safety and enjoyment. Numerous local tour operators sprang into action as soon as the eruption began. Options range from hiking tours with knowledgeable guides to helicopter flights for a bird’s-eye view. A guided hike will typically include transport from Reykjavík or Grindavík, gas masks if needed, and a guide who knows the safest route and all the geology facts. Some companies even have volcanologists or photographers leading tours, so you get expert commentary (and help finding the best photo spots!). If hiking isn’t your thing, consider a volcano helicopter tour – these are unforgettable. You’ll soar above the erupting fissure and lava field, hovering at a safe distance while snapping incredible photos. As of August, foot access to the crater is restricted, so helicopter tours are the only way to get an “up-close” look directly over the crater[Source]. Helicopters depart from Reykjavík or from a small airport near the Blue Lagoon, and while pricey (think $300-$500+ per person), it’s a once-in-a-lifetime thrill to see molten lava from the air.

Super Jeep tours are another adventurous option. These tours use 4×4 trucks to drive as close as possible (legally) to the eruption. For example, the “Volcano Shuttle” I mentioned earlier is essentially a guided super-jeep tour – you’ll join a small group and rumble over rough tracks to a prime viewing spot[Source]. No slogging up mountains required, and they often depart in late afternoon to catch sunset at the volcano. Make sure any tour operator you choose is legitimate and follows safety guidelines (look for ones linked on official tourism sites or with good reviews).

If you’re an experienced hiker and well-prepared, you can absolutely visit without a guide. Thousands of people have been trekking to recent eruptions on their own. The key is preparation: monitor the official updates, carry proper gear (see next section), and use common sense. Start hikes early enough that you’re not caught returning in total darkness (unless you’re purposely doing a night shoot, in which case have headlamps and maybe don’t go solo). Always let someone know your plans. One benefit of going independent is flexibility – you can choose the perfect weather window or go at night for photographs. Just remember, independent doesn’t mean alone. You’ll likely meet many fellow hikers on the trail, and it’s wise to stick to the crowd for route finding and support. If conditions look sketchy (bad weather, strong gas smell, etc.), be ready to turn back. Iceland’s Civil Protection might also limit access to guided groups only if things get dangerous, so double-check if any such rule is in effect on the day.

Local Tip: Whether guided or not, consider timing your visit for either early morning or late evening. Crowds are thinner and the lava’s glow is more vivid in low light. Sunset and sunrise (which are only a few hours apart in Iceland’s summer) often paint the sky in dramatic colors to complement the orange lava – a photographer’s dream!

Lastly, if you do go with a tour, you’re also supporting the local community (many of whom in Grindavík have had a rough time with evacuations and quakes in recent years). And guides can take the stress out of logistics. But if you’re the DIY type, Iceland is one of the safest countries to explore – just respect Mother Nature and you’ll be fine.

Visiting an Icelandic volcano comes with a few important rules – both legal regulations and unwritten codes of respect for nature. Here’s what you need to know and follow.

This can’t be said enough – if an area is roped off or signposted as closed, do not cross it. The eruption site is under constant monitoring and the restricted zones can change. As of now, the entire immediate eruption zone is officially closed for safety[Source], with access only allowed up to certain viewing points. It’s actually against the law to ignore Civil Protection orders, and you could face fines (not to mention risk your life). So, enjoy from where it’s permitted. If the lava advances or new hazards emerge, authorities will adjust those zones – keep an eye on updates.

That’s a mantra repeated by rescue teams. We actually had two people at our hostel tell us about how they did this. Not good. Fresh lava may look like solid black rock once it cools, but inside it can remain molten for weeks or months. The crust can be thin like glass – one step and you could punch through into molten lava or superheated steam. It has happened to people! Do not, under any circumstances, walk on or touch lava that isn’t officially declared cool[Source]. Even months-old lava can still be >500°C just below the surface. Also, the brittle crust is often razor sharp – it will shred your boots and skin if you slip. So admire the lava field from a safe distance (several meters away at least). The same goes for the ground immediately around new fissures or cones – they could collapse or release toxic gases.

Iceland has specific drone laws, and near an eruption there may be extra rules. Drones should be under 25 kg, flown below 120 m altitude, and never over crowds or sensitive areas[Source]. Additionally, during ongoing eruptions the aviation authorities sometimes declare a temporary no-fly zone for drones to avoid collision with helicopters doing research or search-and-rescue. It’s best to check Safetravel or ask local authorities on site if drones are allowed that day. If you do fly, you must have your name and contact on the drone[Source] (so they can catch fools who fly recklessly). Keep line of sight at all times. Frankly, if it’s super crowded or very active, consider skipping the drone to avoid any incidents – there have been cases of drones crashing into lava or causing near-misses with other aircraft. Flying in volcanic ash and updrafts is also inherently risky for your drone’s health.

Taking rocks or hardened lava as souvenirs is technically discouraged (and in protected areas, not allowed). Apart from the ethical side of leaving nature as you found it, fresh lava can be very sharp – not ideal in your luggage – and may even still degas. Also, removing things from some natural sites can incur fines. So take only pictures, leave only footprints (on established paths).

The eruption site might feel like a wild wasteland, but it’s a delicate environment. The moss and lichen on older lava fields take decades to regrow if damaged. Please stay on marked trails to avoid trampling vegetation or causing erosion. Carry out all your trash – this includes organic waste like banana peels or apple cores. With the influx of visitors, litter has unfortunately been found around past eruption sites. Let’s keep this one pristine. If nature calls while you’re out there (hey, it’s a long hike), there are no facilities – come prepared, and follow leave-no-trace guidelines (bury waste 15cm deep and 50m away from water, or better yet, carry a ziplock for toilet paper to pack it out).

If park rangers, police, or rescue volunteers (often in neon vests) give instructions, please follow them immediately. They might instruct everyone to move back due to changing winds or ask drone operators to ground their drones. They might also enforce a turn-around time in the evening – e.g., not letting people start the hike if it’s too late in the day. This is for everyone’s safety. Arguing with them or sneaking in after closure is not cool (and could get you into legal trouble).

Volcanic eruptions can release not just gas but also fine ash and “tephra” that settle on the ground. Avoid kicking up ash or dust unnecessarily, as it can harm nearby plant life and get into streams. If a particular area looks burnt or fragile from recent fires (lava ignites the moss and brush easily), steer clear of it. There have been wildfires caused by this eruption’s lava already[Source] – respect any burnt areas which might still be smoldering or structurally unstable.

Wild camping is generally allowed in Iceland with many caveats, but around an eruption site it’s usually not permitted. Firstly, conditions can become dangerous at night due to gas, and secondly, it creates logistical issues (human waste, etc.). During the 2021 eruption some people camped near the volcano, but officials later discouraged it as crowds grew. For Sundhnúkur’s 2025 eruption, assume no camping is allowed in the immediate area (unless an official camping area is designated, which hasn’t happened so far). Rather, stay in a nearby town or drive back to a campground away from the site.

In summary, treat the volcano area with the same respect you’d give any sacred natural wonder. By following the rules and caring for the environment, we ensure that everyone – including future visitors next week – can enjoy this spectacle safely.

• A new volcanic eruption began July 16, 2025, at Sundhnúkur Crater Row on Iceland’s Reykjanes Peninsula.
• It’s further north than previous eruptions, creating new lava fields near Grindavík.
• Currently, 1 crater is still active. Lava flows are contained. Spectacular views, minimal threat to towns.

• Yes, if you follow guidelines. You shouldn’t walk up to the crater, but there are safe public viewing areas.
• Main concern is volcanic gas (SO₂). Check loftgaedi.is for real-time air quality. Bring a mask if you’re sensitive.
• Avoid restricted zones and stay behind safety barriers.

• Hike Path B (Fagradalsfjall): 4.7–6.1 km hike, 2–4 hrs round trip. Great crater views from afar.
• Roadside Pull-Offs: Route 43 and Route 41 offer distant but clear views (especially at night).
• No entry to the lava field or crater area.

• 45–50 min drive from Reykjavík or 20 min from Keflavík.
• Rent a car, or book a Super Jeep tour or helicopter flight.
• Do not stop on road shoulders. Use designated parking only.

• Grindavík – closest to the action. Small town, cozy lodges.
• Blue Lagoon area – spa hotels with volcano views.
• Reykjavík – best for nightlife, restaurants, and tours.

• Tripod and zoom lens = must-haves.
• Best shots: sunset, twilight, or nighttime for lava glow.
• Drone flying is restricted; check daily rules.
• Protect gear from gas and ash. Bring extra batteries and lens cloths.

• Layered clothing, hiking boots, headlamp, rain gear
• N95 or P3 mask for volcanic gas
• Snacks, water, and offline maps (no shops near the site)

✔ Stay on marked trails
✔ Check gas & weather forecasts
✔ Respect closures
✘ Don’t walk on new lava
✘ Don’t fly drones in no-fly zones
✘ Don’t camp near the eruption

• Safetravel Iceland – official updates

• Loftgæði Air Quality – gas forecasts

• Visit Reykjanes – local tips