Key risk
Katla jökulhlaup
A Katla eruption could send floods of 100,000+ m³/s down this channel.
Mulakvisl (Múlakvísl): The River Below Katla
A glacial river from Mýrdalsjökull, directly linked to Katla volcano. Its Route 1 bridge is engineered around the jökulhlaup risk.
Region
South Iceland
Katla jökulhlaup risk. Monitor volcanic alerts.
Múlakvísl is one of Iceland's most monitored rivers due to its direct connection to Katla, one of the country's most powerful subglacial volcanoes. The river drains meltwater from Mýrdalsjökull glacier and crosses under Route 1 between Vík and Skógar. Its bridge has been engineered to handle, or be sacrificed to, the glacial floods a Katla eruption would send down the channel. A jökulhlaup in 2011 destroyed the previous bridge.
Sources and last reviewed
Last reviewed: 2026-03-03
Múlakvísl is in a Katla eruption hazard zone. Always check the Icelandic Met Office for volcanic alerts. During eruption or jökulhlaup warnings, evacuate the area immediately following official instructions.
Pages are reviewed for practical usefulness, source quality, and volatile claims before publication.
Official sources to check
Location
Route 1 crossing
Between Vík and Skógar on the Ring Road.
Engineering
Sacrificial bridge
Designed to break away safely during extreme glacial floods.
What to Expect at Múlakvísl
- Glacial river with grey-brown sediment from Mýrdalsjökull
- Specially engineered bridge visible from Route 1
- Volcanic hazard signage and evacuation route markers
- Views of the Mýrdalsjökull ice cap above the outwash plain
- Evidence of the 2011 jökulhlaup that destroyed the previous bridge
- Sulfurous mineral deposits coloring the riverbed and banks near the glacier outlet
Nearby Attractions
- Vík í Mýrdal and Reynisfjara black sand beach
- Skógafoss waterfall
- Sólheimajökull glacier tongue
- Dyrhólaey promontory and arch (puffin colony in summer)
- Seljalandsfoss waterfall with walk-behind path
How to Get to Múlakvísl
- Crosses Route 1 (Ring Road) between Vík and Skógar
- About 2.5 hours from Reykjavik by car
- The bridge is clearly visible when driving the South Coast
- No special vehicle required; regular car on paved Route 1
- Brief photo stops are possible at safe pullouts near the bridge
Best Time to Visit Múlakvísl
- Accessible year-round via Route 1 (Ring Road)
- Summer offers clearest views of Mýrdalsjökull above the river
- Winter driving requires caution for icy road conditions
- Always check volcanic status before South Coast travel
- The bridge area is a brief stop; plan time for nearby attractions
Planning help
Múlakvísl River FAQs
Quick answers with safety notes where it matters.