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Katla is one of Iceland’s most explosive volcanoes, located underneath Iceland’s fourth largest ice cap, Mýrdalsjökull. Since settlement, it has erupted, on average, once every fifty years, with the last eruption in 1918. It is long overdue.

Katla is connected to Eyjafjallajökull, which erupted in 2010 and caused widespread disruption to air traffic, as well as changes in climate. Usually, Katla is triggered by an eruption here, usually going off within the decade afterwards. Kristín Jónsdóttir said in 2016 that it was ‘a matter of when, not if’ Iceland would face the wrath of Katla once more.

Katla means ‘Kettle’ in Icelandic, and many women are named after the volcano with it being one of the more popular girl’s names.

Geography and geology of Katla

Katla is located on Iceland’s South Coast, north of the village of Vík. Its peak is 1,512 metres (4,961 feet) above sea level, and its crater is 10 kilometres (6.2 miles) wide. The ice of Mýrdalsjökull is, 700 metres (2,300 feet) thick at certain points over it.

Because of this huge amount of ice, some smaller eruptions do not even break the surface. However, even these can be very dangerous, as they can still cause unexpected floods as the melted water seeps from under the glacier. One only needs to see the black sand desert of Sólheimasandur to see how much life can thrive in the glacial outwash plain under Katla.

Because of the floods caused by Katla, Iceland’s South Coast has very few settlements. Floods such as these have wiped out entire villages before.

The floods following the 1918 eruption were particularly powerful, clearing away huge swathes of land. The lava that followed, however, was so voluminous that it extended the southern coastline over five kilometres (eight miles) out to sea.

Though Eyjafjallajökull and Katla have a relationship of exploding in quick succession, they are part of different volcanic systems. Katla’s system has an area of 595 square kilometres (230 square miles), and is connected to the Eldgjá canyon.

Tours on Katla

Katla is beneath the peak of Mýrdalsjökull, which is surrounded by outlet glaciers, making tours on it few and far between - after all, it is very difficult to reach. Some helicopter tours, however, will make a landing here. Some super jeep tours also take the bumpy but beautiful path to the top.

It should be noted that there are ice caves above Katla, which are accessible for longer throughout the year than the ice caves at Vatnajökull. These ones, however, do not have blue ice.

Where to see Katla

Katla can be seen from the Ring Road, which encircles Iceland, by travelling along the South Coast, so long as the weather is clear. It will be visible for much of the drive, which also takes you passed features such as the waterfall Seljalandsfoss and the black sand beach of Reynisfjara.

It can also be viewed when visiting one of the glacier tongues of Mýrdalsjökull, such as Sólheimajökull, the most popular outlet for glacier hiking.

Mýrdalsjökull is a glacier in the south of the Icelandic highlands. It is the country's fourth largest ice cap, covering nearly 600 square kilometres (232 square miles), and its highest peak is almost 1500 meters tall. It is most well-known for sitting atop the notorious and explosive volcano, Katla.

Mýrdalsjökull is visible from Route 1 on the South Coast, sitting to the north of the village of Vík. It is visited on some snowmobiling, ice caving and helicopter tours, and one of its glacial outlets, Sólheimajökull, is the most popular place in the country for ice-climbing and glacier hiking.

Eruptions beneath Myrdalsjokull

Since 2010, the world has known of the volcano beneath Eyjafjallajökull; after all, it halted European air travel for over a week and stumped news readers everywhere. Few, however, are aware of the much larger volcano right beside it.

Mýrdalsjökull conceals Katla, one of the country’s most active volcanoes, having erupted, on average, once every fifty years since 930 AD. Because of the glacier above it, these eruptions tend to cause enormous ash clouds. It is these ash clouds that lead to flights being grounded, crops and livestock poisoned, and have the potential to change the world’s climate.

The last major eruption beneath Katla was in 1918, in which such huge lahar floods occurred that the southern coastline was extended five kilometres outwards. This area is also very susceptible to glacial floods, or 'jökulhlaup', during eruptions, even when the lava does not break through the surface of the ice. These are as dangerous as the lava itself, having wiped out whole Icelandic villages before.

Historically, the area was little settled for this reason.

Katla is connected to the same volcanic system as Eyjafjallajökull and usually erupts violently a few years after Eyjafjallajökull does. As the ex-president, Ólafur Ragnar Grímsson said in 2010:

So it is currently several years overdue. Katla is monitored heavily, and roads around it closed when seismic activity increases. All road closures around Iceland can be found on Road and Coastal Administration's website.

Tours on Myrdalsjokull

While there are no eruptions immediately imminent, tours continue to run onMýrdalsjökull, allowing visitors to enjoy the glacier. It is, for example, possible to snowmobile across its surface throughout the year and take ice caving tours beneath it throughout the year, with departures from both Reykjavík and Vík.

Considering the ice caves under Vatnajökull glacier are usually only accessible from November to March, this provides a wider window of opportunity for travellers to Iceland outside of the depths of winter. It should be noted that the caves in Mýrdalsjökull do not have the same blue ice, however.

Tours around Myrdalsjokull

Mýrdalsjökull can be seen on all South Coast tours that reach Vík and beyond in clear weather. It can also be seen from above on helicopter tours that depart from Reykjavík.

The best perspectives of the glacier, however, can be found on the popular Fimmvörðuháls hiking trail, which goes between Eyjafjallajökull and Mýrdalsjökull. Part of this hike can be done in a day, or you can take the complete route from Þórsmörk to Skógar on a three-day trek

Vík í Mýdral, or just Vík, is the southernmost village on the Icelandic mainland, located 186 kilometres (110 miles) from the capital Reykjavík.

Often visited by those travelling the popular sightseeing route along the South Coast, it is a wonderful place to stop, recharge, and if you are taking your time, rest for the night. Though it only has around 300 residents, the village is very popular amongst tourists for its convenience and beautiful surrounding landscapes.

Features near Vik

Reaching Vík from Reykjavík takes approximately two and a half hours, and en route, there are many marvellous features to admire. Two of the country’s most famous waterfalls, Skógafoss and Seljalandsfoss, lay between the two destinations; the former has awe-inspiring power, whereas the latter can be fully encircled.

The glaciers Eyjafjallajökull and Mýrdalsjökull can also be seen on clear days; both of these cover volcanoes which are particularly explosive, with Eyjafjallajökull famously disrupting European air travel in 2010. Out to sea in especially good weather, the Westman Islands can also be seen on the horizon.

Just before Vík are the popular birdwatching cliffs of Dyrhólaey, where you can also find an enormous rock arch curving out into the ocean. This is one of the best places for birdwatching in Iceland, with thousands of puffins nesting here from May to August.

The village itself sits opposite one of the country’s most famous features: Reynisfjara black sand beach. Considered one of the world’s most beautiful non-tropical beaches, it boasts incredible geology.

Particularly of note are the Reynisdrangar sea-stacks, said to be two trolls frozen in the light of the morning sun as they tried to pull a ship into shore.

Though this beach makes for a lovely walk, particularly for those staying in Vík overnight, as they can see it under the midnight sun or northern lights, it has its dangers. Sneaker waves can be notorious here, so visitors should stay far from the water’s edge, and never go for a swim. Lives have been lost here before.

The route to Vík from Reykjavík is beautiful and continues to be so as you travel further along the South Coast, through the Skeiðarásandur black-sand-plains into Vatnajökull National Park. This beautiful region is often the final destination of those passing through Vík, as it is home to the largest glacier in Europe, the Skaftafell Nature Reserve, and Jökulsárlón Glacier Lagoon.

Of course, ambitious travellers will carry on from here to encircle the full country.

Wildlife around Vik

Vík, due to its closeness to the Reynisfjall and Dyrhólaey cliffs, has a rich birdlife. Short walks from the village will take you to the nesting grounds of gulls, fulmar, guillemots, and in summer, puffins.

Due to its coastal location, visitors to Vík have a decent chance to see seals on the shore. There is also a slim chance to see whales or dolphins; the twenty or so species that live in Iceland’s waters can appear at any time.

Services in Vik

Vík has a wide variety of public services, due to its remoteness and its importance in connecting the east and west of Iceland. There are gas stations, shops and cafes, a swimming pool, a wool factory that can be visited, and a wide range of accommodation options for all budgets.

Please note, however, that as the village has such a small year-round population, those with special dietary requirements should purchase their food from Reykjavík before departing.

The South Coast of Iceland is one of the most popular parts of the country for travellers. South Iceland is lined with countless natural wonders including cascading waterfalls, volcanoes, glaciers and black sand beaches.

This incredible South Shore of Iceland stretches from the greater Reykjavík area in the west to the magnificent Jökulsárlón glacier lagoon in the east. It’s possible to incorporate a trip to The Golden Circle before heading South. This is another popular area with visitors to Iceland. Here you can see Þingvellir (or Thingvellir) National Park, the Geysir geothermal area, a volcanic crater called Kerið, and one of Iceland's biggest waterfalls; Gulfoss.

Highlights of the South Coast of Iceland

The South Coast offers an array of natural wonders that draw thousands of visitors each day.

The whole area is geologically very young, formed during the last Ice Age by the lava flows from numerous volcanoes in the area. The lowlands are surrounded by volcanically active mountains, notably Eyjafjallajökull and Hekla. If you stop at Hveragerði, you can visit the Quake 2008 exhibition where you can witness the split in the North American and Eurasian tectonic plates.

In terms of culture in the South, it is rich and diverse. Most towns have amateur groups for theatre, poetry reading, and choir song. Community is a big part of an Icelander’s life and one of the key things that help them get through the winter months. The South was once home to the ancient bishop seat of Skálholt. Also, Iceland's most famous saga, Njal's Saga, takes place in the region.

When driving the South Coast route from Reykjavík city, the first major features are the two great waterfalls of Seljalandsfoss and Skógafoss. These falls which sit beneath the notorious subglacial volcano, Eyjafjallajökull. On clear days, the Westman Islands can be seen across the ocean from these beautiful cascades. Less than a kilometre from Seljalandsfoss is the hidden gem of Gljúfrabúi waterfall. 

Skógar, which is home to Skogafoss waterfall, has a very interesting museum that discusses some of the nation’s history and culture. One of Iceland’s most famous hiking trails, Fímmvörðuháls, cuts through the area and is worth the walk if you have time.

A little further down the route is the glacier Mýrdalsjökull glacier, which covers one of Iceland’s most explosive volcanoes, Katla. Many glacier hikes are taken here upon the glacier tongue, Sólheimajökull.

This landscape has also been shaped by volcanic eruptions, although these were much more recent. Vast expanses of the black sand stretch from the Highlands to the sea, part of several glacial outwash plains that flood during a volcanic eruption. One such sandplain, Sólheimasandur, is home to a crashed DC-3 Plane Wreck.

The Dyrhólaey cliffs are next, home to many seabirds. Jutting out to sea is an enormous rock arch of the same name, which you can marvel at from many angles.

Adjacent to the village of Vík is the famous black-sand beach, Reynisfjara, which is home to basalt columns and the Reynisdrangar rock formations. These pillars are said to be two trolls frozen by the light of the sun. 

Though beautiful, this area is notorious for its dangerous sneaker waves. Even on seemingly calm and still days, visitors should keep a distance from the shoreline. There are no landmasses between Reynisfjara beach and the continent of Antarctica, so you can imagine how the waves can build momentum.

After passing through Vík you will cross the glacial sandplain of Skeiðarársandur before entering Vatnajökull National Park. Here you can see Vatnajokull Glacier, Iceland’s largest glacier. Many ice cave tours take place in Vatnajokull in the winter months.

Move on to the dramatic Skaftafell Nature Reserve in the National Park. Here you can enjoy a diversity of landscapes and terrains. The area was considered a National Park in its own right because it was so beautiful.

Finally, you will approach the famous Jokulsarlon glacier lagoon, a deep lake that fills with icebergs as the Breiðamerkurjökull glacier slowly breaks down. Here there are plenty of options for boat tours that take you around the lagoon and up close to icebergs. A short distance from Jökulsárlón you will find the Diamond Beach, where blue icebergs wash on the black-sand beach, and another glacier lagoon called Fjallsárlón.

Geography, Nature & Wildlife

The South Coast is the most easily accessible part of the country’s southern region, found along the Ring Road (Route 1), which encircles Iceland. The area is made up of diverse landscapes; marshlands, bays, cultivated pastures, estuaries and black sand deserts.

Underneath the soil rests a vast lava field, known as Þjórsárhraun. Reaching several hundred metres offshore, it provides a protective factor to the lowland as ocean waves crash upon it. This results in the South Shore being unusually lacking in the deep fjords that so distinctly characterise the rest of Iceland's shoreline.

Unlike most early Icelandic settlements, few of the communities in the south were based on fishing. The only town with a significant harbour in the south is Þorlákshöfn, where the ferry to the Westman Islands leaves. Some agriculture is found here, with farms nestled in the mountains, but because of the glacial floods, they are few and far between.

There are, however, plenty of hot springs in the area. The most famous is the Blue Lagoon Spa which is close to Keflavik airport. The lagoon formed as a result of the overflow from a nearby power plant.

However, there are lots of natural geothermal hot springs in more remote locations, where you can avoid the crowds and have a more natural experience. Some of the spots travellers recommend are Seljavallalaug, which is close to Skogar, and Reykjadalur, the Valley of Steam, which is close to Hveragerði.

The South region boasts vibrant bird life during all seasons. Freshwater birds nest in the marshlands and around the estuaries, while seabirds flock around the cliffs of Reynisdrangar and Dyrhólaey. 

You may be able to spot North Atlantic puffins nesting on the cliffs between May and August. In summer there are 2-3 times as many Arctic Tern as Icelanders so you are bound to spot some of them on your travels. Some species stay throughout the harsh Icelandic winter, including the northern diver, the loom and various species of gulls and ducks.  

Seals are often found along the shore, particularly around the Jökulsárlón Glacier Lagoon and Diamond Beach. As with everywhere in Iceland, you should always keep an eye out to sea, as whales and dolphins reside all along its coastline.

In terms of sports; horse riding is popular, as is fishing, hiking, snorkelling, sightseeing and river rafting.