Fagradalsfjall Volcano Trail - Walk across lava fields shaped by eruptions from 2021 to 2025
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Fagradalsfjall Volcano Trail

Walk across lava fields shaped by eruptions from 2021 to 2025

4 hoursModerate
HikingVolcanoNature

About This Experience

Between 2021 and 2025, a series of volcanic eruptions on the Reykjanes Peninsula completely transformed the landscape around Fagradalsfjall. What was once a relatively unremarkable stretch of moss-covered lava is now a raw, otherworldly terrain of twisted rock, still venting steam in places, barely 40 minutes from Reykjavik.

The otherworldly black lava fields of Fagradalsfjall stretching to the horizon

We weren't sure what to expect — we'd seen the drone footage during the eruptions, but walking across the solidified lava in person is something else entirely. The rock is jet black, rippled and folded like frozen waves. In some places you can feel warmth through your boots. The scale of it only hits you when you reach one of the higher viewpoints and realise how far the lava travelled.

This isn't a polished tourist attraction. The trails shift as conditions change, and the landscape is still geologically active. That rawness is exactly what makes it special.

Steam rising from cracks in the fresh lava rock
Twisted and folded lava formations near the Geldingadalur crater

What to Expect

The main trailhead is at Parking P1 near Grindavik (follow signs for Fagradalsfjall / Litli-Hrútur). The hike to the main lava field viewpoint takes about 45-60 minutes each way, with roughly 200 metres of elevation gain. The path is marked with stakes but crosses uneven terrain — proper hiking boots are essential.

Once you reach the lava field, you can explore along marked routes that wind between the different eruption sites. The 2023 Litli-Hrútur eruption area and the original 2021 Geldingadalur crater are the most impressive sections. Steam vents hiss from cracks in the rock, and the colour palette shifts between pitch black, rust red, and sulphur yellow.

Colour palette of black lava, rust red oxidation, and sulphur yellow deposits

The trail conditions depend heavily on recent volcanic activity — always check safetravel.is before heading out. When we visited, the trails were open and well-marked, but sections can close without notice if seismic activity picks up.

Practical Tips

  • Check safetravel.is and the Icelandic Met Office on the morning of your hike — trail status can change overnight
  • Wear proper hiking boots with ankle support; the lava rock is sharp and uneven
  • Bring layers — it's exposed and windy, even when Reykjavik is calm
  • The hike is about 7-8 km round trip with moderate elevation gain
  • Start early to avoid afternoon crowds and wind
  • No facilities at the trailhead — use the toilets in Grindavik before driving up
  • Carry water and snacks; there's nothing on the trail
  • The drive from Reykjavik takes about 40 minutes via Route 43
  • Do not stray from marked paths — the ground can be unstable near steam vents
  • Gas levels can be hazardous in low-lying areas; if you smell strong sulphur, move to higher ground

Photo Gallery

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Fagradalsfjall Volcano Trail
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