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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.
Þingvellir National Park is the only UNESCO World Heritage site on the Icelandic mainland and one of the three stops on the world famous Golden Circle sightseeing route, alongside the Haukadalur Geothermal Valley (Geysir) and Gullfoss Waterfall. Just to the south of the park is Þingvallavatn, Iceland’s largest natural lake.
Geography
The first thing that visitors to the National Park notice is its sheer aesthetic beauty; dried magma fields, covered in Icelandic moss, sit carved by glacial springs and surrounded by a bowl of ancient mountain peaks.
Two of the greatest attractions in the park are the exposed North American and Eurasian tectonic plates; it is one of the only regions in the world where you can see geology such as this on land.
Visitors are encouraged to walk along the North American tectonic plate, where they can read more about the area’s fascinating formation and history, before descending into the valley below.
History
Þingvellir can be anglicised to ‘Fields of Parliament’, a nod to the area’s fascinating history and relevance to Icelandic culture. It is here, after all, that the world’s first democratically elected parliament that remains functioning, Alþingi, was formed in 930 AD.
It may seem unlikely that Vikings would want to be under such an uncombative government, but the thirty or so clans that lived in Iceland at the time sought to prosper in their harsh new environment.
The first gathering was such a success that the meetings became annual, and it became a place where disputes were settled, criminals were tried, and laws to the benefit of all were laid down.
This saw the birth of the Icelandic Commonwealth, a time of independence and freedom for the Icelandic people before they became constituents of the Norwegian monarchy. Sessions would continue to be held at Þingvellir until 1798.
Though the parliament was removed by the Danish at this time, it returned 1845 to Reykjavík.
Another major reason as to why Þingvellir is considered so important to Icelanders is the fact that this is where the decision was made to abandon the belief of Paganism and the Norse Gods; the people adopted Christianity in 1000 AD under threat of invasion from Norway.
This turning point in history was left to the pagan lawspeaker, Þorgeir Þorkelsson, who rested on the choice for one day and one night before reappearing to share his decision.
To symbolise the country’s change, he threw idols of his old deities into the northern waterfall Goðafoss, the name of which translates to ‘Waterfall of the Gods’.
Silfra Fissure
Þingvellir is one of the most widely visited attractions in Iceland, in large part due to the fact that it is home to the glacial spring, Silfra fissure, one of the top ten sites in the world for snorkellers and scuba divers.
Silfra (meaning ‘Silver’) is a submerged ravine within the park, boasting visibility of up to 100 metres (328 feet) and a temperature just above freezing. Participants in these tours will be attired at the Silfra carpark in neoprene hoodies and gloves, as well as an undersuit and drysuit for thermal protection.
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.
Silfra is a fissure filled with fresh spring water within Þingvellir National Park, and one of the country’s most cherished wonders. Snorkelling and diving in its crystal-clear waters is an experience that is both thrilling and relaxing, and it is now considered to be one of the top five dive sites in the world. It takes around an hour to reach Silfra from Reykjavík.
Geography of Silfra
Silfra fissure opened in 1789, due to the movements of the tectonic plates that frame Þingvellir National Park. The North American and Eurasian plates, which run all the way through Iceland, separate at about 2 centimetres per year, and as they do, they tear open fissures in the land between them.
Some of the ravines fill with water travelling underground through the porous lava fields in the area, originating from Langjökull glacier about 60 kilometres north. It can take the water up to a century to reach Silfra and this long filtration process results in the water being both extremely clear and drinkable.
Because the water travels underground, it maintains a constant temperature of two to three degrees Celsius and does not freeze over immediately at the source of the spring. Snorkelling and diving tours are thus open throughout the year.
The clarity of the water is what draws most visitors. The visibility can extend to over 100 metres, allowing you to see the canyon walls and bottom like you are floating over a great cathedral.
The last colour that water absorbs is blue, which means that when you look forward in Silfra, it is as if you are looking into an ethereal, vivid, azure world. The clarity also means that sun-rays refract through the surface of the water, creating rainbows on Silfra’s bed when the weather allows.
Snorkelling in Silfra
Snorkelling in Silfra fissure is a highly enjoyable activity, but you must meet some prerequisites to be able to join. These are as follows:
- You must be able to swim
- You must be over 16
- You must be in good physical health
- You must be at least 145 centimetres and 45 kilograms
- If you are over sixty, you will need a medical waiver
- If you are over forty-five with a history of heavy alcohol use and pipe smoking, you will also need a waiver
The most common option for snorkelling is to conduct it in a drysuit. Drysuits work with a fluffy undersuit to keep your body free from water and insulated against the cold, making the task of swimming through the near-freezing temperature more than achievable.
While drysuit snorkelling is the most comfortable and popular option, a few tours allow you to go through Silfra wearing a wetsuit. Wetsuits, made of neoprene, allow water to surround your body in a thin layer, that your body then heats up and uses to protect you. Though they grant you more flexibility, they are not so warm, so this should be done by the daring; you will also need to be at least 50 kilograms to snorkel in a wetsuit.
In all tours, you wear neoprene on your head and hands to allow for better mobility, a mask and snorkel, and a pair of fins, all of which are provided on site. The course of Silfra takes approximately forty minutes, and there is a gentle current throughout, meaning it requires minimal energy to traverse.
Diving in Silfra
Diving through Silfra gives an extra dimension to its beauty, as you will be able to look up and see the sun glistening upon the surface as you cruise through the crystal clear waters. However, considering the risks associated with diving in cold water and cumbersome equipment, all who partake must meet all the requirements above, as well as one of the following:
- You must be a qualified diver with a certification in a drysuit speciality, OR
- You must be a qualified diver with at least 10 logged dives in a drysuit conducted over the past two years, signed by an instructor or divemaster.
Photo from Thrihnukagigar Volcano Tour
Þríhnúkagígur is a dormant volcano in west Iceland, famous for its enormous magma chamber. It is the only magma chamber in the world that can be entered, and has a depth of 213 metres (699 feet).
Formation of Þríhnúkagígur
Þríhnúkagígur was a normal volcano in Iceland’s Blue Mountain range, also call Bláfjöll. However, its last eruption, almost 2,000 years ago, had some very unusual consequences.
After an eruption, the magma chamber of a volcano, now free of pressure, usually remains full of lava that cools into solid rock until the next eruption. If the magma chamber is fully emptied, the volcano will usually collapse in on itself.
To the bewilderment of scientists, however, neither of these things happened to Þríhnúkagígur.
It seems that a rift beneath the chamber drained it of all remaining lava, leaving behind an enormous chamber, that covered an area of 3,270 square metres (35,200 square feet). To give some idea of the scale of this, the Statue of Liberty could stretch her limbs within it, and it could comfortably fit Hallgrímskirkja church.
Unusually, the volcano did not collapse, and it has remained unchanged since.
Discovery and Exploration of Þríhnúkagígur
The vast magma chamber under Þríhnúkagígur would not be discovered until 1974, by an Icelandic cave explorer. Its discovery made world news, as volcanologists had not seen anything like it before, and were fighting to try to explain its existence.
In 2012, it was opened for tourism. A lift, akin to those used in mining, was installed, and visitors were now allowed to join tours plumbing its depths.
Its popularity comes not only from the uniqueness of the tour and the scale of the chamber, but the incredible colouration within it. Mineral deposits dye the walls vivid shades of red, yellow, green and blue, making the incredible space that much more ethereal.
Reaching Þríhnúkagígur requires a short but uphill hike, which can be done by any steady on their feet with a reasonable level of fitness. Tours only operate in summer.
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