Road 
Weather 
About
Grensdalur is a central volcanic vent and mountain of the Hengill volcanic system in Iceland. The elevation is about 497 m (1631 ft).
The landscape around volcanic areas looks stark. Black rock, steam vents, the smell of sulfur. Another planet.
The terrain can be sharp and uneven. Good hiking boots aren't optional, they're essential.
Map of Grensdalur
Map
64.0465°N, 21.1906°W · Reykjavík Area
Plan your visit
Off the main road- 3.9 km from Route 1
Nearest town- Hveragerði — 5.1 km away
Distance from Reykjavík- 38 km in a straight line
What else is close- 264 mapped places within 20 km
Tours near Grensdalur
Hot Springs Pass - Classic Admissionfrom 8.900 ISK · 2 h
Hot Springs & Bathhouse Pass - Signature Admissionfrom 16.900 ISK · 3 h
Reykjadalur Hot River Hike - Half Day Tourfrom 19.990 ISK · 4 h
Hot Spring Valley Horse Riding Tour – Reykjadalurfrom 16.200 ISK · 2 h 15 min
Northern Lights Hike to Reykjadalur Hot Riverfrom 13.842 ISK · 4 h
Mega Zipline - Superman Ride (Fast as a Falcon!)from 13.490 ISK · 55 min
Geothermal Heights & Zipline Thrills: The Hellisheidi Geothermal Exhibition & Mega Zipline Adventurefrom 9.650 ISK · 3 h
Lava & Air Adventure Combofrom 16.300 ISK · 3 h
Conventional Ride with VIDEOfrom 13.280 ISK · 55 min
Blue Ice - Glacier Hike & Ice Climbing from Reykjavíkfrom 32.990 ISK · 13 h 30 min
Golden Circle and Laugarás Lagoon Lerki Admissionfrom 23.039 ISK · 9 h 30 min
Spirit of the Aurora (28 person max vehicle)from 14.990 ISK · 5 hAll 1,648 toursBy activity and regionGrensdalur weather and conditions
Last updated
3°Cclear · feels -3°C7 m/swind9 h 51 mdaylight · 08:14 – 18:06
Tonight
Northern lights forecast by region
In season now · Winter in IcelandBlue Ice - Glacier Hike & Ice Climbing from Reykjavíkfrom 32.990 ISK · 13 h 30 minAll 1,648 tours
Cars & campers
−12%exclusive discountFree cancellation
KEF airport pickup 24/74.8
KEF airport pickup 24/74.8
Transmission
Fuel
Seats
Drive
SleepsPhotos & videos
No verified videos yet — we only show footage confirmed to be Grensdalur, no lookalikes. Search YouTube
Nearby
km column = your drive
- 1Grensdalur2 km
- 2Hrómundartindur3 km
- 3Hengill7 km
- 4
Leitin18 km - 5
Þríhnúkagígur25 km
Waterfalls
Hot springs
All hot springs →
Fuel
Supermarkets
Tours
A Gourmet golden circle - a taste of Iceland combined with amazing nature attractions!from 159.000 ISK · 8 hours 
A Magical Day in Iceland - a private custom made tour - Up to 9 passengersfrom 195.000 ISK · 8 hours 
Adventure in Landmannalaugar and Hot Springs - Reykjavík and Hellafrom 26.900 ISK · 13 hours
Frequently
asked
questions
Is it safe to visit Grensdalur?
Grensdalur 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 Grensdalur?
Grensdalur 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 Grensdalur?
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 Grensdalur?
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.
Data & sources
Everything on this page comes from the sources below. Live feeds refresh automatically.
Wikimedia CommonsHero & gallery photography · The original uploader was Reykholt · Wikimedia Commons · CC BY-SA 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
Spotted an error, or have something to add? Help us keep this page accurate.
Iceland nowfrom 19 Sep 06:10