Stuðlagil Canyon: Iceland's Basalt Column Paradise

A jaw-dropping canyon of towering hexagonal basalt columns lining a turquoise glacial river — one of Iceland's most photogenic natural wonders.

Updated February 1, 2026By the Iceland.org Travel Team
Location
East Iceland
Jökuldalur valley, off Route 923
Stuðlagil Canyon is home to the largest and most impressive display of hexagonal basalt columns in Iceland. Hidden in the Jökuldalur valley of East Iceland, the canyon was largely unknown until 2016 when the construction of the Kárahnjúkar hydropower dam upstream reduced the water level of the Jökla river, revealing the extraordinary basalt formations that had been submerged for centuries. The exposed columns rise dramatically on both sides of the now-turquoise glacial river, creating one of the most photographed landscapes in the country. The canyon can be accessed from two sides, each offering a different perspective.
Safety + sourcing
Last updated: 2026-02-01

Do not attempt to ford the river without proper knowledge and equipment. Water levels can change rapidly. Stay on marked trails.

Sources to check
Formation
Basalt Columns

Iceland's most impressive hexagonal basalt display

Access Points
East & West

East side is easier; west requires river crossing

Discovered
2016

Revealed when dam reduced river water levels

What to Expect

Hexagonal Basalt Columns

Towering geometric columns formed by slow cooling of lava, lining both sides of the canyon

Turquoise Glacial River

Striking blue-green water from glacial sediment flowing between the basalt walls

East Side Trail

Easier access with a flat 30-minute walk to a viewing platform above the canyon

West Side Trail

Longer hike with potential river crossing, but access to the canyon floor for up-close views

Photography Opportunities

One of Iceland's most photogenic locations, especially in morning and evening light

Off the Beaten Path

Located in less-visited East Iceland, though growing rapidly in popularity

Getting There

Stuðlagil is located in the Jökuldalur valley in East Iceland. For the east side (recommended for most visitors), turn off Route 1 onto Route 923 heading north toward Jökuldalur. After about 20 km, follow signs to the Stuðlagil east parking area. The flat trail from the parking lot is about 2 km each way and takes approximately 30 minutes of easy walking along the river. For the west side (closer to the canyon floor), take Route 923 further north and cross the bridge, then follow the gravel road south on the opposite side of the valley. This trail is longer (about 4 km each way) and may require fording the Jökla river to reach the canyon floor -- the river crossing can be dangerous and is not recommended without preparation. From Egilsstaðir (the main town in East Iceland, with fuel, shops, and accommodation), the drive takes approximately 45 minutes (75 km) to the east side trailhead. Free parking is available at both access points, with basic information signs at each.

Best Time to Visit

June through September is the best time to visit when the water level is lower and the turquoise glacial color is most vivid. July offers long daylight and the first reliably clear views of the basalt columns. August and early September typically produce the most striking turquoise water color as glacial sediment loads decrease and water levels drop further. Early morning visits (before 10 AM) help avoid the growing crowds, particularly during July and August peak season. October sees falling temperatures but can still offer good conditions on drier days. From November through May, the east side trail may be icy and snow-covered, and river water levels are typically higher, partially obscuring the iconic basalt columns. The canyon is technically accessible in winter but requires caution and proper gear. Overcast days can actually enhance the turquoise water color by reducing glare.

Planning help

Stuðlagil Canyon FAQs

Quick answers with safety notes where it matters.