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The glacier volcano of Eyjafjallajokull (1651 m) is located at the borders of the South Icelandic highlands. It featured prominently in world news in 2010 when ash from its eruption halted air traffic in Europe.

An ice cap of about 100 km with several outlet glaciers covers the caldera of Eyjafjallajökull that stands at the height of 1651 meters. The diamaeter of its highest crater is around 3-4 km2 wide and the rim has several peaks.

Eyjafjallajokull glacier volcano lies north of Skogar, and to the west of Myrdalsjokull glacier and the massive volcano there; Katla.

Eyjafjallajokull is thought to be related geologically to Katla in Myrdalsjokull and eruptions in the former have often been followed by eruptions in the latter.

The 2010 eruptions

The end of 2010 saw some small seismic activity that gradually increased and resulted in a small eruption in March of 2010, characterized by a flow of alkani-olivine basalt lava.

This first stage lasted until April 12th and created the volcanic craters Magni and Modi at the Fimmvorduhals trail. They are so far Iceland's newest vocanic craters, and still eminate steam with lava glowing under the surface.

However it was the second phase of the eruption that started on April 14th that created the huge ash cloud that rose about 9 km into the skies.

This eruption halted air traffic in Europe for days, and its estimated that as many as 107.000 flights may have been cancelled during the week it lasted.

The ejected tephra measured around 250 million cubic meters. This ash cloud lasted for six days and some more localized disruption continued into May. The eruption was officially declared to be over in October 2010, as the snow on the glacier had ceased to melt.

Future volcanic developments?

Eyjafjallajokull erupted in years 920, 1612 and again 1821-1823.

Its latest eruptions were the two that occurred in 2010.

Future volcanic developments remain unclear. The area is still highly active and can be quite unpredictable. It continues, however, to be closely monitored by The Icelandic Meterological Office.

Solheimajokull is a beautiful outlet glacier of the Myrdalsjokull icecap.

Solheimajokull is a rugged glacial tounge riddled with crevasses and spectacular ever-changing ice formations, jagged ridges and sinkholes and is popular for hiking and ice climbing.

The glacier river Jokulsa a Solheimasandur has its source at the glacier, flowing over the sand plain of Solheimasandur towards the sea.

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 from October to April, 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

The South Coast of Iceland is the country's most visited sightseeing route, along with the Golden Circle. 

The famed South Coast shoreline stretches from the greater Reykjavík area and is dotted with natural wonders such as cascading waterfalls, volcanoes both active and dormant, black sand beaches and glacier lagoons. 

Geography, Nature & Wildlife

Iceland is divided into eight geographical regions. Out of these, the Southern Region is the largest, as it spans over 24.000 square kilometres with its administrative centre in the municipality of Selfoss. 

What is known as the South Coast embodies the shoreline of this particular region. The area consists of a lowland that is mostly composed of marshlands, bays and cultivated pastures that are met by a series of black beaches where the estuaries to the east and west of the district close off the coastal body. 

Underneath the soil rests a vast lava field, known as Þjórsárhraun. Its edges reach several hundred metres offshore where the ocean waves crash upon them, thereby protecting the lowland from the invasion of the sea. This results in the South Coast being unusually lacking in the deep fjords that so distinctly characterise the rest of Iceland's shore line. 

The region boasts vibrant bird life during all seasons. It is not only rich with both marshland birds and seabirds but also migrating birds such as the North Atlantic puffin. Some species stay throughout the harsh Icelandic winter, including the northern diver, the loom and various species of gulls and ducks.  

Highlights of the South Coast 

The South Coast offers an unprecedented array of natural wonders that draw thousands of visitors each day. When driving the route from Reykjavík City, the highlights in their correct order are: 

• Seljalandsfoss Waterfall
• Vestmannaeyjar; The Westman Islands
• Eyjafjallajökull Glacier Volcano
• Skógafoss Waterfall
• Sólheimajökull Glacier 
• Dyrhólaey Peninsula
• Reynisfjara Black Sand Beach
• Reynisdrangar Sea Stacks
• Coastal Village Vík í Mýrdal
• Skeiðarársandur Glacial Sand Plain
• Vatnajökull National Park
• Jökulsárlón Glacier Lagoon 

These attractions count for but a fraction of what the South Coast has to offer. The vast sand plains of Sólheimasandur are home to a crashed DC-3 Plane Wreck, and close to Seljavellir by the Skógar Village there's Seljavallalaug, one of the oldest swimming pools in Iceland. 

• Explore the many wonders of the area on these South Coast Tours