Þórsmörk valley

A highland landscape defined by shelter

Þórsmörk lies between the outlet glaciers and mountain landscapes associated with Eyjafjallajökull and Mýrdalsjökull. Steep ridges interrupt wind and weather, creating places that often feel calmer and more sheltered than the open Highlands around them. This protection helps explain the density of vegetation, but it is only part of the story.

Glacial erosion cut valleys through the surrounding mountains. Volcanic activity shaped the bedrock and supplied new material. Rivers and glacial floods transported sand, gravel and finer sediment, repeatedly rebuilding terraces, flats and channels. Some deposits stabilised long enough for soil and vegetation to develop; others continue to be rearranged by water.

The result is not a landscape in which nature has become gentle. It is one in which destructive and regenerative processes exist unusually close together. A green wooded slope may rise immediately above a broad grey riverbed. Stable paths cross old deposits while active channels continue moving below. Þórsmörk does not exist independently of the glaciers and rivers surrounding it. It is sustained and continually reshaped by what descends into it.

Birch woodland beneath the glaciers

The downy birch woodland (Betula pubescens) is a surviving remnant of the woodland that covered a much greater part of Iceland before settlement. The present vegetation should not be imagined as entirely unchanged since that time. It has survived, retreated and recovered under changing pressure, and later protection has allowed regeneration.

Sheep grazing is part of the wider explanation for why Iceland has so few trees today. Woodland was cleared for fuel and grazing after settlement, while continued browsing restricted the recovery of young birch. In Þórsmörk, protection from grazing helped the surviving woodland and new growth expand again. What visitors see is therefore both a genuine link to pre-settlement Iceland and evidence of what can return when pressure is reduced.

Birch, willow, mosses and low plants bind soil on slopes that would otherwise erode more quickly. The woodland also changes the experience of walking. Paths move between trunks and foliage before opening suddenly onto rivers, ridges and glaciers. This alternation between enclosure and revelation is one of Þórsmörk’s defining qualities.

The recovery remains vulnerable. Leaving established paths can damage vegetation and begin new erosion lines, especially on wet or steep ground. Camping should remain within designated areas, and visitors should follow current local guidance rather than treating the absence of fences as permission to travel anywhere.

Þórsmörk, Goðaland and Krossá

Krossá is the physical division visitors need to understand. Þórsmörk proper lies north of the river. Goðaland, including Básar, lies south of it. In everyday tourism, hiking and conversation, both sides are often called Þórsmörk, and together they form one connected destination. Geography still matters when planning access.

Básar can normally be reached by vehicle without crossing Krossá. Driving onwards to Húsadalur or Langidalur requires the Krossá crossing. This is not an ordinary ford with a permanent line. The river is glacial, changes channels and can vary greatly with rainfall, temperature, meltwater and conditions upstream.

Seasonal pedestrian bridges may connect the two sides, but they are movable. Their location and availability should never be assumed from an old map, photograph or previous visit. Walkers should obtain current information at the visitor bases and plan enough time for a changed route.

Markarfljót and Þröngá belong to the wider river landscape surrounding Þórsmörk. Along with Krossá, they carry water and sediment from the glaciers and mountains, but Krossá is the river that most directly divides the principal visitor areas.

Reaching Þórsmörk along F249

F249 leaves the settled South Coast and continues inland towards Goðaland and Þórsmörk. The route includes rough surfaces and several unbridged streams and rivers. Conditions change with rain, glacial melt and movement within the riverbeds, so a description from an earlier journey cannot guarantee present passage.

A capable 4×4 may reach Básar in favourable conditions, provided the driver has appropriate experience and the vehicle is suitable for the crossings encountered before it. Krossá is a different decision. The crossing should be left to experienced drivers using properly equipped large vehicles. A vehicle can meet the basic definition of a 4×4 and still be entirely unsuitable for Krossá.

Never follow another vehicle into water merely because it crossed successfully. Differences in wheel size, weight, intake height, equipment and driver knowledge matter. So do changes in the river over a surprisingly short time. If a crossing cannot be assessed confidently, turn back.

Scheduled highland buses and guided vehicles offer another way into the area. Services, stopping places and operating periods change, so travellers should confirm current arrangements before departure. The bus is an option rather than a requirement, but it removes the need for visitors to make their own river-crossing decisions.

Road status alone does not describe river conditions. Check current road and weather information, seek local advice and remain prepared to change plans. Rental agreements may also restrict which roads or rivers a vehicle may enter.

Langidalur, Húsadalur and Básar

Three principal bases serve the wider hiking area. Langidalur and Húsadalur lie north of Krossá in Þórsmörk proper. Básar lies south of the river in Goðaland. Each has its own facilities and management rather than forming one single visitor centre.

Langidalur has a hut, camping and seasonal services. Húsadalur provides accommodation, camping and visitor facilities and is used as the destination pin for this general page. Básar has huts and camping and provides access to the paths and ridges of Goðaland.

The bases are connected by walking routes, but the practical connection can depend on Krossá and the location of seasonal footbridges. Food service, showers, baggage transport, bus stops, bookings and opening periods may change. Visitors planning to stay should confirm what is available at the specific base they intend to use rather than assuming that facilities are shared across the valley.

Walking within Þórsmörk and Goðaland

The walking network ranges from short woodland paths to demanding full-day routes. Valahnúkur is a good short panoramic ascent from the northern side, providing an elevated view across ridges, rivers and the two sides of Krossá. Goðaland has other popular short climbs and viewpoints closer to Básar.

No single longer circuit needs to define Þórsmörk. Routes branch through both Þórsmörk and Goðaland, and the best choice depends on available time, weather, river conditions, temporary bridges and the base from which a visitor begins. Marked routes should be selected using current maps and local information. Unmarked routes require stronger navigation and highland experience.

The road into the area also passes landscapes worth treating as destinations rather than roadside interruptions. Stakkholtsgjá and Steinholtsgjá are distinctive canyons, while Álfakirkja—often called the Elf Church—is one of the named formations associated with the approach. Each deserves its own practical description; this page mentions them only as part of the wider Þórsmörk journey.

The Laugavegur connects Þórsmörk with Landmannalaugar, while Fimmvörðuháls crosses towards Skógar. Both are major mountain journeys requiring planning beyond the scope of this general destination page. Their presence explains why Þórsmörk can be an arrival point, a departure point or a base between longer stages.

A day visitor can experience woodland, rivers and one elevated view, especially when transport times are planned carefully. Several days reveal a different place: changing weather, separate walking areas and the contrast between the north and south sides of Krossá become part of the experience rather than a brief overview.

A landscape that remains in motion

Þórsmörk has visitor facilities and well-used paths, but the rivers remain active and the land is not fixed around human plans. Floods have shifted channels and deposited new material repeatedly. Riverbanks can be unstable, apparently dry channels may not remain dry and established routes may need to adapt.

This movement is part of the destination’s character. Infrastructure supports access without eliminating the processes that made the valley. Visitors should keep away from unstable banks, never enter a river channel for a photograph and respect temporary closures or route changes.

Þórsmörk means “Þór’s woodland,” traditionally understood as a reference to the Norse god Þór. The name suits a place that has long appeared distinct from the open land around it. Its richness does not contradict Iceland’s broader character. It shows what can develop when shelter, sediment, water and protection meet beneath the glaciers.

• • Two geographical areas: Þórsmörk proper lies north of Krossá, while Goðaland and Básar lie to the south.
  • A surviving woodland: The birch is a remnant of Iceland’s pre-settlement woodland, strengthened by later protection and regeneration.
  • Three visitor bases: Langidalur and Húsadalur are in Þórsmörk proper; Básar is in Goðaland.
  • Changing connection: Seasonal footbridges over Krossá may be moved, so walkers must check their current location.
  • A major trail junction: The Laugavegur and Fimmvörðuháls connect Þórsmörk with wider highland routes.
  • More than a day trip: A day gives a glimpse of the area, while its path network can support several days of hiking.