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VolcanoReykjavík Area

Þríhnúkagígur

Reykjavík Area, IcelandDormant540 m

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VolcanoReykjavík Area

Þríhnúkagígur

Reykjavík Area, IcelandDormant540 m

About

Þríhnúkagígur is a dormant volcano in the volcanic system of Brennisteinsfjöll near Reykjavík, Iceland. Covering a 3,270 square metres (35,200 sq ft) area and a depth of 213 meters (699 ft), it has not erupted in the past 4000 years.

The landscape around volcanic areas looks stark. Black rock, steam vents, the smell of sulfur. Another planet.

Covering a 3,270 square metres (35,200 sq ft) area and a depth of 213 meters (699 ft), it has not erupted in the past 4000 years. It was discovered in 1974 by cave explorer Árni B. Stefánsson, and opened for tourism in 2012.

The terrain can be sharp and uneven. Good hiking boots aren't optional, they're essential.

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Map of Þríhnúkagígur

Þríhnúkagígur is in the Reykjavík Area, Iceland at 63.9984°N, 21.6989°W. The interactive map has the exact pin, parking and everything around it.

Open Þríhnúkagígur on the interactive map →

Plan your visit

Off the main road: 8.8 km from Route 1
Nearest town: Hafnarfjörður — 13 km away
Distance from Reykjavík: 20 km in a straight line
What else is close: 882 mapped places within 20 km

Þríhnúkagígur weather and conditions

At Þríhnúkagígur in Reykjavik, conditions as of 1 September 2026, 07:15 (Iceland time): 3°C (feels like -1°C), clear, wind 5 m/s. Daylight today: 14 h 40 m (sunrise 06:07, sunset 20:47). Check road status before driving on live road conditions.

Data verified 1 September 2026, 07:15· source: Open-Meteo at this location’s coordinates · refreshes hourly

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Visit now · Open year-round · 30 min stop · Visibility —

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Reykjavík South Coast West North East Westfjords Reykjanes Highlands

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Cars & campers

−12%exclusive discountFree cancellation

KEF airport pickup 24/74.8

SUV

Dacia Duster 4x4

Cheapest real 4WD in the fleet — gravel, the Westfjords and easy summer F-roads without truck prices.

VW Caravelle

Whole family or friend group in one car — gear in the back, room to stretch.

TransmissionAutomatic

12,750 kr15,000 kr/day

Reserve −12%

Camper

Key Camper Wild Duo

Sleep right by the trailhead, wake up at the falls — F-road ready from mid-June.

Tours near Þríhnúkagígur

Free cancellation

Small groups

Lagoons & spa

A Gourmet golden circle - a taste of Iceland combined with amazing nature attractions!

Embark on a private adventure through the Golden Circle with Northern Adventurer.

Duration8 hours

HighlightsReykjavík area

A Magical Day in Iceland - a private custom made tour - Up to 9 passengers

So often our customers ask for something different.

Duration8 hours

HighlightsReykjavík area

A Premium Private Tour of Ancient Legends and Natural Marvels of Snæfellsnes!

Come with us on an journey to the land of Snæfellsnes, an ancient realm steeped in legends and wonder.

Duration11 hours

HighlightsReykjavík area

From

323.999 ISK

View tour →

Photos & videos

Þríhnúkagígur — photo by Uaiecs · Wikimedia Commons · CC BY 3.0

Photo: Uaiecs · Wikimedia Commons · CC BY 3.0

No verified videos yet — we only show footage confirmed to be Þríhnúkagígur, no lookalikes. Search YouTube

Reviews

Frequently
asked
questions

Is it safe to visit Þríhnúkagígur?

Þríhnúkagígur is not currently erupting, and the surrounding area is generally safe to visit on marked trails. Volcanic and geothermal ground can still be unstable or hide gas — stay on the path, and check safetravel.is for any local closures before you drive.

How do I get to Þríhnúkagígur?

Þríhnúkagígur is in Reykjavík Area. Check live road conditions on this page before you drive — highland access often needs a 4×4 and some routes only open in summer.

Can I hike Þríhnúkagígur?

It depends on the volcano and current activity. Some Icelandic cones have short marked trails to the rim; others sit under glaciers or in closed areas and cannot be climbed without a guide. Never approach an active eruption unless the official viewing area is open — conditions change fast.

What should I know about volcanic gas near Þríhnúkagígur?

Volcanic and geothermal areas can release sulphur dioxide and hydrogen sulphide, which are toxic in high concentrations and collect in low-lying spots. Stay on marked paths, leave immediately if you smell strong sulphur or feel unwell, and check the Met Office gas forecasts during any eruption.

Nearby

km column = your drive

1Leitin8 km
2Brennisteinsfjöll11 km
3Eldborg20 km
4Hengill21 km
5Krýsuvík21 km

Waterfalls

#1.Litli-Foss

12 km·~14 min drive

A waterfall in the Capital Area.

#2.Breiðholtsfoss

13 km·~16 min drive

A waterfall in the Capital Area.

#3.Selásfoss

13 km·~16 min drive

A waterfall in the Capital Area.

#4.Selfoss

14 km·~17 min drive

A waterfall in the Capital Area.

4 waterfalls near Reykjavík Area

Hot Springs

#1.Geothermal hot spring near Kópavogsbær

13 km·~15 min drive

Public_bath hot spring

#2.Natural hot pot near Breiðholt

13 km·~16 min drive

Swimming_pool hot spring

#3.Víti

13 km·~16 min drive

Public_bath hot spring

#4.Natural hot pot near Hafnarfjarðarkaupstaður

15 km·~18 min drive

Swimming_pool hot spring

4 hot springs near Reykjavík Area

Campsites

#1.Viðistaðatúni

15 km·~19 min drive

Greater Reykjavík area campsite. Urban convenience with easier booking than central city…

#2.Hafnarfjörður

15 km·~19 min drive

The camp site in Hafnarfjordur is in a large area called Vidistaðatun close to the center…

#3.Camper Resort Reykjavík

17 km·~21 min drive

Greater Reykjavík area campsite. Urban convenience with easier booking than central city…

#4.Tjaldsvæði í Laugardal

18 km·~22 min drive

Greater Reykjavík area campsite. Urban convenience with easier booking than central city…

4 campsites near Reykjavík Area

Supermarkets

#1.Krónan

11 km·~14 min drive

Krónan supermarket — supplies

#2.Krambúð

12 km·~14 min drive

Krambúð supermarket — supplies

#3.Bónus

12 km·~14 min drive

Bónus supermarket — supplies

#4.Nettó

13 km·~16 min drive

Nettó supermarket — supplies

4 supermarkets near Reykjavík Area

Gas stations

#1.Búðarkór

12 km·~14 min drive

Atlantsolía · 279.8 kr/L petrol

#2.Norðlingaholt

12 km·~14 min drive

N1 · 279.9 kr/L petrol

#3.Suðurfell

13 km·~16 min drive

Orkan · 279.7 kr/L petrol

#4.Salavegur

13 km·~16 min drive

Orkan · 279.7 kr/L petrol

4 gas stations near Reykjavík Area

Tours

#1.A Gourmet golden circle - a taste of Iceland combined with amazing nature attractions!

8 hours

Embark on a private adventure through the Golden Circle with Northern Adventurer.

from 159.000 ISKView tour →

#2.A Magical Day in Iceland - a private custom made tour - Up to 9 passengers

8 hours

So often our customers ask for something different.

from 195.000 ISKView tour →

#3.A Premium Private Tour of Ancient Legends and Natural Marvels of Snæfellsnes!

11 hours

Come with us on an journey to the land of Snæfellsnes, an ancient realm steeped in legends and wonder.

from 323.999 ISKView tour →

3 tours near Reykjavík Area

Data & sources

Everything on this page comes from the sources below. Live feeds refresh automatically.

Wikimedia CommonsHero & gallery photography · Uaiecs · Wikimedia Commons · CC BY 3.0
VegagerðinVisitor access & practical facts
VegagerðinLive road status & cameras · Icelandic Road Administration
Open-MeteoWeather forecast · CC BY 4.0
NOAA SWPCAurora (planetary Kp) forecast · public domain
OpenStreetMapInteractive-map data · ODbL
Esri, Maxar & Earthstar GeographicsSatellite imagery for the 3D terrain render · GIS User Community