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Eldborg crater

West IcelandCraterFree entryOpen all year
ELDBORG IN SHORT

Eldborg is a 60-metre spatter cone crater in the Hnappadalur valley in West Iceland, reached by an easy round-trip hike of about 6.6 km from the Snorrastaðir farm. It is roughly 115 km (around 1 hour 40 minutes) from Reykjavík, free to visit, open all year, and the walk takes around 1.5 to 2 hours.

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Quick factsHistoryGetting thereThe hikeBest time to visitSafety tipsFacilitiesMapNearbyWhere to stayFAQ

About Eldborg

Eldborg, meaning "fire castle", is one of Iceland's most strikingly regular volcanic craters: a near-perfect ring of jagged black rock rising about 60 metres above the surrounding lava field, with a bowl around 50 metres deep. It formed as a spatter cone along a short volcanic fissure, built up from lava fountaining out of a single vent rather than spreading sideways.

The crater is oval, about 200 metres across at its longest, and its rim stands roughly 100 metres above sea level. It is the largest in a short row of craters along the same volcanic rift, and from the top you can pick out the smaller ones nearby. Standing alone on a flat plain with mountains and, on clear days, the Snæfellsjökull glacier behind it, it looks from a distance like a fortress guarding the lava.

That lava is the Eldborgarhraun field, about 32 square kilometres of basalt that poured out of the rift. It has had a long time to cool and is now well vegetated, with moss, shrubs and low birch growing over the rock.

The crater has been a protected natural monument since 1974, and the surrounding Hnappadalur lava field, covered in moss and low vegetation, is part of the appeal of the walk out to it. From the rim, the view stretches over the lava field towards the sea and, on a clear day, across to Snæfellsjökull.

Quick facts

GPS64.79621, -22.32112 (the crater); the walk starts at Snorrastaðir farm
HeightAbout 60 m above the surrounding lava, roughly 100 m above sea level
Crater sizeAbout 200 m across at its longest and about 50 m deep
TypeSpatter cone crater
AgeThought to have erupted 5,000–8,000 years ago
RegionHnappadalur, West Iceland, at the eastern end of the Snæfellsnes peninsula
From ReykjavíkAbout 115 km, around 1 hour 40 minutes by car
EntryFree
Trail lengthAbout 6.6 km round trip from Snorrastaðir (roughly 2.5–3 km each way through the lava field)
Time needed1.5–2 hours for the hike
ProtectedNatural monument since 1974

The fortress of fire

Eldborg means "fortress of fire" or "fire castle", and the name fits the shape. Geologists reckon it was one of the most active volcanoes in the area some 5,000 to 8,000 years ago.

Landnámabók, the medieval Book of Settlements, tells a different story. It describes an eruption in the days of the first settlers and says that a farm stood where the crater is today and burned when the fire came up. The dates don't match what the rocks say, so the tale may belong to another eruption nearby, but it has stuck to Eldborg ever since.

How to get to Eldborg

By car from ReykjavíkDrive north on Route 1 to Borgarnes. Just past the town, turn left onto Route 54 (Snæfellsnesvegur) and follow it for 35–40 km, then turn left onto the side road signposted to Snorrastaðir. There is parking at the farm, on the south side of the crater. You can't drive to the crater itself; the last stretch is on foot.
By public transportThere is no public bus to the trailhead, so a rental car or tour is needed.
Hiking thereThe trail crosses the lava field on a clear path with a mix of rock, gravel and moss underfoot, gaining and losing 50–100 m of height. Chains are provided to help on the steeper sections up to the crater rim.

Because it is close to Route 54, Eldborg can be reached in any season. The trail is open all year, but it gets muddy in autumn and can be icy or snow-covered in winter, so proper footwear matters outside summer.

The hike to Eldborg crater, step by step

An easy walk of about 6 to 6.6 km there and back. Allow 1.5 to 2 hours.

Step 1: Park at SnorrastaðirLeave the car at Snorrastaðir farm, where there is a toilet and a bin. The first stretch from the farm to the start of the trail is lit.
Step 2: Follow the riverThe path begins alongside a small river behind the farm before it heads out into the lava. This stretch is a pleasant part of the walk in its own right.
Step 3: Cross the lava fieldAbout 2.5 km through shrub-covered lava. It is nearly flat and well marked, but rough underfoot, with lava rocks and plenty of high steps, so watch your feet.
Step 4: Climb to the rimThe last part is a short, steep climb up the side of the cone, with chains to hold on to. At the top you can look straight down into the 50-metre-deep bowl and out over the other craters, the lava field and the coast.
Step 5: Back the same wayReturn along the same path. Take care on the way down from the rim, which is the trickiest part in wet or icy conditions.

Best time to visit Eldborg

SummerFirm, dry paths and long daylight make this the easiest season for the hike.
AutumnFewer people on the trail, but it turns muddy after rain.
WinterThe trail stays open but can be icy; ice spikes and warm layers help, and daylight hours are short.

Safety and practical tips

  • Wear sturdy shoes; the path crosses uneven lava rock with some steep, chain-assisted sections near the top.
  • Stay on the marked path to protect the moss, which is slow-growing and easily damaged.
  • Bring water, as there is nothing to buy along the trail.
  • Check the weather before setting out, since this is an exposed, open landscape with little shelter.
  • Go on a clear day if you can. The view from the rim to Snæfellsjökull is the reward for the climb.

Facilities and accessibility

A toilet is available near the trailhead at Snorrastaðir, which also has accommodation. There is no café or shop directly at the crater.

On the map

Open in Google Maps →

Nearby places worth a stop

Gerðuberg cliffsGerðuberg cliffsTall basalt column cliffs a short drive awayLandbrotalaugLandbrotalaugTiny natural hot spring close by
LöngufjörurLong, pale sand beach on the south coast of the peninsula
BúðirBúðirSmall hamlet with a black church in the Búðahraun lava field, between grassy dunes and a beach dotted with black lava rocksRauðfeldsgjáRauðfeldsgjáDeep, narrow ravine in the cliffs south of Snæfellsjökull; a bit of a scramble to get inside
BjarnarfossWaterfall further along the peninsula
BorgarnesBorgarnesThe nearest town, on the way from Reykjavík

Where to stay near Eldborg

Snorrastaðir, right by the trailhead, offers accommodation, and the villages of Borgarnes and Grundarfjörður have more hotel and guesthouse options within easy reach.

Eldborg FAQ

How long does the Eldborg hike take?

The round trip is about 6.6 km and takes roughly 1.5 to 2 hours at an easy pace.

Is there an entry fee for Eldborg?

No, it is free to visit, though it is a protected natural monument and visitors are asked to stay on the marked path.

How far is Eldborg from Reykjavík?

About 115 km, roughly 1 hour 40 minutes by car.

Is the Eldborg trail difficult?

It is rated easy, though there are some steep, chain-assisted steps near the crater rim and the surface is uneven lava rock.

Where does the Eldborg hike start?

At Snorrastaðir farm, reached by a side road off Route 54. There is parking and a toilet at the farm.

How old is Eldborg crater?

It is thought to have erupted around 5,000 to 8,000 years ago, although the Book of Settlements tells of an eruption here in settlement times.

Can you see into the crater?

Yes. The trail goes right up to the rim, where you look down into a bowl about 50 metres deep.

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