Gjain
A small green ravine of falls, ferns and columns hidden in a valley that is otherwise ash and gravel.
Updated 1 November 2026
Gjain is a hollow perhaps a couple of hundred metres across, cut below the level of the surrounding plateau, and the contrast is what makes it: the valley around is grey tephra and scrub, and this drops into moss, birch, ferns and running water. Small waterfalls come in over the rim, columns of basalt stand in the walls, and the stream braids between them. It is beside Stong, the farm Hekla buried in 1104, so the two are visited together. Its scale surprises people who arrive expecting a canyon - this is intimate, walked in twenty minutes, and it has been used for filming, which is how many first saw it.
Background
Gjáin is a small valley in Þjórsárdalur, in the south of Iceland, full of little waterfalls, ponds and volcanic formations, about half an hour's walk from the historical farm of Stöng. The river Rauðá runs through it and falls as Gjárfoss, and the green hollow of moss, birch and ferns stands out against the grey tephra of the valley around it.
Source: Wikipedia, "Gjáin"
Highlights
- A green hollow in grey ground - the contrast with the ash valley around.
- Falls over the rim - small streams dropping into the ravine.
- Basalt columns in the walls - standing among moss and birch.
- Stong beside it - the farm Hekla buried in 1104.
When to go
June to September; the access road closes with snow. Two hours including Stong.
Good to know
This is small, and visitors expecting a gorge find it modest. The ground is wet moss that damages easily, so keeping to worn ground matters. Road 327 has a ford that hire cars are often not insured for. No facilities.
Nearby
Haifoss is up the valley; Hjalparfoss is at its mouth.
Key facts
Source: Wikidata, item Q1528959, read on 18 October 2026.
What to pack for Gjain
Chosen from what this place is for. Tap a kit for the full checklist.
- Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
- Warm base layers - Merino or synthetic against the skin - never cotton, which chills when damp. Find on Amazon
- Layers + a waterproof shell - Mountain weather turns fast; a packable rain jacket saves the day. Find on Amazon
- An insulated + windproof jacket - A down or synthetic layer under a hard shell handles most cold. Find on Amazon
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