Highlights: 
Vatnajökull glacier is the largest glacier in Europe, covering 8% of Iceland’s landmass.
It is the central feature of the Vatnajökull National park, found in the south west of Iceland, a popular spot for activities like glacier hiking from Skaftafell, boat tours in the Jökulsárlón glacier lagoon, and ice caving tours between November and March.
Facts about Vatnajokull
Vatnajökull has a surface area of approximately 8,100 square kilometres (3127 square miles); though it is rapidly shrinking due to climate change, its recession is not quite as advanced as at other glaciers, such as Langjökull and Mýrdalsjökull. In parts, it is a kilometre deep (over three thousand feet), and its average thickness is around half of that.
Vatnajökull also holds the tallest peak in Iceland beneath its ice; Hvannadalshnjúkur is 2,200 metres tall (7,218 feet). It also conceals some of the most active volcanoes in the country, the most notable being Grímsvötn, Öræfajökull and Bárðarbunga.
Volcanic activity in the region has occurred on and off throughout the centuries, and many geologists believe that several eruptions are overdue. If their calculations are correct, it would mean significant volcanic activity for Vatnajökull over the scope of the next half-century.
Depending on winds, this could result in worldwide consequences in terms of air-travel, agriculture and the general climate.
The glacier boasts over 30 outlet glaciers, which are channels of ice that flow out of ice caps but remain constrained on the sides of the valley. The major outlet glaciers of Vatnajökull include Dyngjujökull in the north, Breiðamerkurjökull, and Skeiðarárjökull to the south. To the west, one can find the outlet glaciers Síðujökull, Skaftárjökull and Tungnaárjökull.
Numerous rivers run out of Vatnajökull, making up some of the greatest glacial rivers in Iceland. The most notable are:
Tungnaá (west)
Köldukvísl (west)
Þjórsá (west)
Jökulsá á Fjöllum (north)
Skjálfandafljót (north)
Jökulsá á Brú (northeast)
Jökulsá í Fljótsdal (northeast)
Jökulsá í Lóni (south)
Hornafjarðarfljót (south)
Jökulsá á Breiðamerkursandi (south)
Skeiðará (south)
Núpsvötn (south)
Hverfisfljót (south)
Skaftá (south)
Vatnajokull National Park
Vatnajökull National Park was established in June 2008 and has slowly grown to include more and more areas. The park now covers an area of 14,141 square kilometres (5,460 square miles), 14% of the country. It is the second largest national park in Europe.
Rivers divide the highland plateau to the north of the park. The volcanic table mountain Herðubreið towers over this particular region, along with volcanoes Askja, Snæfell and Kverkfjöll.
The canyon Jökulsárgljúfur was carved out by glacial floods centuries ago. At the upper end of the canyon, you'll find Dettifoss, the most powerful waterfall in Europe. Further north, the horseshoe-shaped canyon Ásbyrgi is believed to have formed when Óðinn's eight-legged horse, Sleipnir, stepped his foot down from the heavens.
East around Snæfell, one can find wetlands and ranges, home to roaming herds of wild reindeer and abundant birdlife. Steep mountain ridges make up the south side of Vatnajökull, where outlet glaciers crawl onto the lowlands. The sandy plains of Skeiðarársandur also lie to the south, and the glacial river Skeiðará runs through this vast desert.
One of Iceland's most visited landmarks in the National Park is the Jökulsárlón glacier lagoon, which sits at the base of the outlet glacier Breiðamerkurjökull. Here, large icebergs that have broken off the glacier float across a vast lake before ending up in the Atlantic Ocean, or washed ashore on the nearby Diamond Beach.
This is one of the best seal-watching spots in the country.
The Future of Vatnajokull
The volume of Vatnajökull reached its peak around 1930 but has since been in a steady process of decline. Because of rising levels of global temperature, Vatnajökull has on average lost about a metre (three feet) of its thickness annually over the past 15 years.
If temperature levels continue to rise, the glacier could be all but gone nearing the end of the next century, leaving only small ice caps on top of the highest mountain summits.
Efforts are being made to prevent what some say is the inevitable, with reforestation projects going on all around the glacier, a proven method of cooling the area. Time will tell how successful they are.
Vatnajokull and Jokulsarlon in Popular Culture
The beauty of Vatnajökull National Park has not gone unnoticed by those in film or television. Many famous scenes have been shot here, starting with James Bond: A View to Kill in 1985. Other notable films with scenes here include Batman Begins, Lara Croft: Tomb Raider, and James Bond: Die Another Day.
Most famously, however, many places in Vatnajökull have been used in the HBO Series Game of Thrones, north of the Wall. The Wall itself is constructed with CGI using shots of the glacier.
Lakagígar, in the south of the Icelandic highlands, is a row of craters, formed during one of the largest eruptions in recorded history, known as the fires of the River Skafta, or ‘Skaftareldar’ in Icelandic. The area has some of the most stunningly attractive landscapes in Iceland.
The majority of the craters are today covered in moss.The total area of the lava field is 565 km² and the estimated volume of volcanic material is over 12 km². The Skaftáreldar eruption that formed the craters in the 18th century led to crop failure, disease and disasters in Iceland. Some believe that the airborne haze from the eruption, blocking the sunlight in the northern hemisphere, may have contributed to the French revolution in 1789.
Landmannalaugar, or the 'People's Pools', is a vast area of stunning and unique beauty in the heart of Iceland's southern Highlands. Throughout the summer, it is one of the most popular places for hiking -- either over one day or several -- and natural hot spring bathing.
Geology
Landmannalaugar is a truly rare area, both geologically and aesthetically. The dramatic region can be found nestled beside the raven-black Laugahraun lava field, a sweeping expanse of dried magma which originally formed in an eruption in 1477.
Landmannalaugar itself is made up of windswept rhyolite mountains, a rock type that creates a full spectrum of dazzling colour. Shades of red, pink, green, blue and golden yellow make for an ethereal location.
Landmannalaugar was historically best known for its natural geothermal baths, hence its name the People's Pools. For centuries, it served as an area of shelter and respite for weary travellers who use these soothing springs as a means to relax after tiring excursions.
Originally, those attending were settlers crossing the barren highlands, but today, they are tourists after an exciting trip.
Today, visitors to the Highlands should always bring a swimsuit and towel, just in case one of these naturally occurring hot pools should crop up along the hiking trail.
The most popular road leading to Landmannalaugar, Sigölduleið, has such springs, and takes you past multiple stunning natural features, including Bláhylur lake, a magnificent body of water nestled in a dormant volcanic crater.
Landmannalaugar can be reached by car in one of two ways. The quickest is driving through West Iceland, either via Selfoss or Þingvellir National Park. A longer but more scenic route would take you along the South Coast of Iceland. This is Iceland’s most popular sightseeing route, aside from the Golden Circle, due to its wealth of sites.
Of course, like many of Iceland’s destinations, Landmannalaugar can also be reached via helicopter, for those who are travelling with less of a concern for budget. Those on more of a shoestring can buy a bus pass that will take them to the region.
Hiking
Landmannalaugar marks the northern end of the Laugavegur, one of Iceland's most popular hiking trails. This route connects Landmannalaugar and Þórsmörk, the ‘Valley of Thor’, ending at the beautiful Skógafoss waterfall.
It is also home to many other notable trails, however, including the path onto the mighty Mt. Brennisteinsalda, the ‘Sulphur Wave’ crater. Visitors can also traverse the trail up the Bláhnjúkur volcano, the 'Blue Peak', whose summit allows for a sweeping view of up to five glaciers on clear days.
Multiple operators run daily tours to Landmannalaugar from mid-June to mid-September, during which time the Icelandic Touring Association operates a small shop, three campsites and a mountain hut equipped with sleeping bags and accommodation for up to 80 visitors.
It is only recommended you take a multi-day hike with an operator. If visiting Landmannalaugar without a guide, you will need a four-wheel-drive.
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:
‘The time for Katla to erupt is coming close… it is high time for European governments and airline authorities all over Europe and the world to start planning for the eventual Katla eruption’
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
Skaftafell is a nature reserve located in Vatnajökull National Park in the south-east of Iceland. It is an oasis of this nation’s diverse landscapes and features, so beautiful it was once a national park in its own right.
Nature of Skaftafell
Skaftafell is notable for its rich flora, growing between sands and glaciers, and for its amazing, contrasting scenery. Visitors will find a wealth of natural attractions, from cascading waterfalls to glacier lagoons, geological formations to black sand deserts.
The rugged region is known for its fantastic photo opportunities, with many awe-inspiring panoramic views.
Like many areas along the South Coast of Iceland, Skaftafell Nature Reserve is known for its glorious hiking trails, often called a ‘hiking paradise’. Unlike in the Highlands, where hikes tend to go on for multiple days, here there are far shorter. There are easy treks that lead to diverse sites such as the waterfall Svartifoss which is surrounded by bizarre and beautiful basalt columns, as well as to glaciers such as Svínafellsjökull.
With a qualified guide, it is an excellent region to try your hand at a spot of either ice climbing or glacier hiking; both activities are two of the most authentically Icelandic experiences you can partake in whilst in the country.
The nature reserve is also the perfect base camp for those seeking to climb Iceland’s highest peak, Hvannadalshnúkur, or for those wishing to spend a number of days exploring the region's attractions, including Vatnajökull glacier, Jökulsárlón glacial lagoon and the nearby Diamond Beach.
Getting to Skaftafell
Just off the Ring Road in the south-east of the country, it takes approximately four hours to reach Skaftafell from Reykjavík. The South Coast, however, is one of the regions most popular sightseeing routes, so the journey usually takes much longer, as visitors will want to make several stops along the way.
Examples of the beautiful natural features found en route to Skaftafell include the waterfalls Seljalandsfoss and Skógafoss, the glaciers Mýrdalsjökull and Eyjafjallajökull, the black sand deserts of Sólheimasandur and Skeiðarársandur, as well as the dramatic coastal rock formations at Dyrhólaey and Reynisdrangar. The villages of Vík and Kirkjubæjarklaustur are also along Route 1 if you need to stop and refuel on refreshments.
Those who have made it all the way to Skaftafell will want to be sure to check out the Jökulsárlón glacier lagoon, a giant lake filled with enormous icebergs breaking from a glacial tongue, and slowly drifting to sea. At the nearby Diamond Beach you can watch them wash upon the shore, and in both the sea and lagoon are many seals which can routinely be spotted.
Skaftafell Visitor Center
You will find a Visitors Centre at Skaftafell which acts as the main information and meeting point for tour operators and independent travellers. At the Skaftafell Visitor Centre, you will find answers to virtually any questions you might have about the greater Skaftafell area, including its history and geology. The Visitors Centre also contains information about nearby hiking trails, recreational options and accommodation.
There is also a hotel at Skaftafell, though it tends to book up very early. Luckily, the south-east is dotted with hotels, cabins and cottages in which you can stay, and the area is not far from the settlements of Höfn or Kirkjubæklaustur.
Grimsvotn refers to subglacial lakes and a volcano of the same name that lie in the western part of Vatnajokull, Europe's largest glacier, in the Icelandic highlands. This volcano is the most active in Iceland.
Grimsvotn volcano
The volcano is of the the basaltic type and is mostly covered by ice. It measures around 900 m in diameter and up to 1000 m above sea level.
The volcano in the same fissure system as Lakagigar. Lakagigar's' eruption of 1783-4 was one of the greatest in historic times. Grimsvotn erupted at the same time and this eruption lasted until 1785.
Most of Grimsvotn's eruptions have been subglacial and the area has produced great glacier bursts, mostly from the glacier rivers Skeidara, Sula and Nupsvotn, with enormous amounts of water flooding south to the sea.
The name Grimsvotn alludes to the subglacial lakes, but is used for the whole volcano. A part of Grimsvotn volcano that protrudes through the glacier is known as Grimsfjall mountain. There the Icelandic Glacier Research Society has set up a cabin, but access to the cabin is severely limited. A prior agreement with the association has to be reached if one wishes to stay there, and in any case one should never travel the glacier unless veing highly experienced with it or accompanied by seasoned guides.
Recent activity
Grimsvotn has had several eruptions in the recent past. Week-long eruptions occurred in 1998 and 2004, the latter disrupting air traffic for a short term though no glacier floods occured at either eruption.
Some tremor was recorded in 2010 and 2011 saw an eruption that was Grimsvotn's strongest in a 100 years and lasted from May 21st to May 28th. While there were no glacier floods this time, the ash rose as high as 20 km and disrupted air travel widely in Europe, resulting in 900 flights being cancelled.
Possible future activity
It is believed that the recent eruptions may mark the beginning of an active period where an eruption may be expected every 2-7 years. Activity in the Bardarbunga stratovolcano has also been associated with an increased activity in Grimsvotn.
The South Coast of Iceland is the country's most visited sightseeing route, along with the Golden Circle.
This incredible shoreline stretches from the greater Reykjavík area in the west to the magnificent Jökulsárlón glacier lagoon in the east and is lined with countless natural wonders such as cascading waterfalls, volcanoes, black sand beaches and glaciers.
Geography, Nature & Wildlife
The South Coast is the most easily accessible part of the country’s southern region, found along the Route 1 highway (the Ring Road), which encircles Iceland. The area consists of a diverse lowland that transitions between, marshlands, bays, cultivated pastures, estuaries and black sand deserts.
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 shoreline.
The 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, including the North Atlantic puffin between May and August. 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.
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 first major features are the two great waterfalls of Seljalandsfoss and Skógafoss, which sit beneath the notorious subglacial volcano, Eyjafjallajökull. On clear days from these beautiful cascades, the Westman Islands can be seen across the ocean.
A little further down the route is the glacier Mýrdalsjökull, which covers one of Iceland’s most explosive volcanoes, Katla. Many glacier hikes are taken here upon the outlet of Sólheimajökull.
The aforementioned Dyrhólaey cliffs are next, home to many seabirds. Even if you come outside of puffin season, they are well worth a visit; 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, home to the rock pillars of Reynisdrangar, said to be two trolls frozen by the light of the sun. Though beautiful, this area is gaining notoriety for its dangerous sneaker waves, so visitors should be sure to stay well away from the edge of the water, even on a calm, still day.
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 sand plain of Skeiðarársandur, before entering Vatnajökull National Park, home to the largest ice cap in Europe, Vatnajökull itself, dozens of glacial outlets and the magnificent Jökulsárlón glacier lagoon.
While almost all of these sites can be seen from Route 1, they make up 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 within the Vatnajökull National Park is the dramatic Skaftafell Nature Reserve.
Less than a kilometre from Seljalandsfoss is the hidden gem of Gljúfrabúi waterfall, and short distances from Jökulsárlón you will find the Diamond Beach, where icebergs wash on the black-sand shore, and another glacier lagoon, Fjallsárlón.
