夏のアウトドア体験セット割｜スノーモービル、氷河ハイキング、インサイド・ザ・ボルケーノ（現地集合）

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.

Gullfoss (translated to ‘Golden Falls’) is one of Iceland’s most iconic and beloved waterfalls, found in the Hvítá river canyon in south-west Iceland.

The water in Hvítá river travels from the glacier Langjökull, before cascading 32 meters (105 feet) down Gullfoss’ two stages in a dramatic display of nature’s raw power. This incredible site is seen by most visitors, as it is on the Golden Circle sightseeing route.

Because of the waterfall’s two stages, Gullfoss should actually be thought of as two separate features. The first, shorter cascade is 11 metres (36 feet), whilst the second drop is 21 metres (69 feet). The canyon walls on both sides of the waterfall reach heights of up to 70 metres (230 feet), descending into the great Gullfossgjúfur canyon. Geologists believe that this canyon was formed by glacial outbursts at the beginning of the last age.

In the summer, approximately 140 cubic metres (459 cubic feet) of water surges down the waterfall every second, whilst in winter that number drops to around 109 cubic metres (358 cubic feet). With such energy, visitors should not be surprised to find themselves drenched by the waterfall’s mighty spray.

As mentioned, Gullfoss makes up a part of the highly popular Golden Circle sightseeing route, alongside Geysir geothermal area and Þingvellir National Park. Many Golden Circle tours include additional activities that can be taken from Gullfoss, such as ascending the mighty nearby glacier Langjökull and entering its ice tunnels, or snowmobiling along its gleaming surface.

History

In the early days of the last century, Gullfoss was at the centre of much controversy regarding foreign investors and their desire to profit off Iceland’s nature. In the year 1907, an English businessman, Howell, sought to utilise the waterfall’s energy and harboured ambitions to use its energy to fuel a hydroelectric plant.

At the time, Gullfoss was owned by a farmer named Tómas Tómasson. Tómas declined Howell’s offer to purchase the land, stating famously “I will not sell my friend!” He would, however, go on to lease Howell the land without the knowledge of a loophole that would allow him to proceed with his plans.

It was Tómas’ daughter, Sigríður Tómasdóttir, who would lead the charge to stop Howell’s ambitions. Having grown up on her father’s sheep farm where she helped pave the first road to Gullfoss, she sought to get the contract nullified, hurriedly saving her own money to hire a lawyer.

The ensuing legal battle was an uphill struggle; the case continued for years, forcing Sigríður to travel many times by foot to Reykjavík, a distance of over 100 kilometres (62 miles). Circumstances became so difficult that Sigríður threatened to throw herself into the waterfall if any construction began.

Her tenacity, however, resulted in success. In 1929, Howell’s withdrew from the lease, unable to keep up with the costs and difficulties of his plan. The waterfall fell back into the hands of the Icelandic people.

Today, Sigríður is recognised for her perseverance in protecting Gullfoss and is often hailed as Iceland’s first environmentalist. As such, she is one of the most famous figures in Iceland’s history. Her contribution is forever marked in stone; a plaque detailing her plight sits at the top of Gullfoss.

Interestingly, the lawyer who assisted Sigríður, Sveinn Björnsson, went on to go down in history too; he became the first president of Iceland in 1944.

Restaurant / Cafe

Besides Gullfoss, visitors can enjoy the views from Gullfoss Cafe, a locally run delicatessen that serves a wide variety of refreshments and meals. The menu has options to tantalise everyone’s taste buds: hot soups, sandwiches, salads and cakes. There is also a shop on site where visitors’ can browse and purchase traditional Icelandic souvenirs.

Wikimedia, Creative Commons, Photo Credit: Matias Ärje

Hvannadalshnúkur, or Hvannadalshnjúkur, is the highest peak of Öræfajökull volcanic glacier in Vatnajökull National Park and the tallest mountain in Iceland. Its latest measurement finds it to be 2,109.6 meters (6952 feet) tall.

Due to the fact Iceland is located over a rift valley, where the tectonic plates are pulling apart rather that crushing together, most mountains do not reach over a thousand metres, making it a remarkable sight.

Geography of Hvannadalshnúkur

Hvannadalshnúkur is a pyramid-shaped peak, that is covered in ice throughout the year. It can be seen from many parts of the country, particularly from the area between the towns of Höfn and Vík on the Ring Road that encircles the country.

It forms part of the crater around Öræfajökull, which conceals a particularly violent volcano. It had a massive eruption in 1362, destroying many farms and killing an unknown number of people. The lava wiped out every settlement around it, all the way to the shore, and pumice was so thick that it posed a huge risk to sailors.

The area was unsettleable for decades. When people finally returned to it, forty years later, it was named Öræfi, which meant ‘the area without a harbour’. Now, it is synonymous with ‘wasteland’.

It had another, although less dramatic, eruption in the year 1727. Even if the consequences were not so widespread, glacial floods pouring from the meltwater of the ice were known to have killed at least three people and destroyed one farm.

Wikimedia, Creative Commons, photo credit: Gummao

Hiking on Hvannadalshnúkur

Hvannadalshnúkur can be hiked near, by taking routes in all different parts of the South Coast, but hiking on it requires experienced mountain guides.

The path up the mountain goes through many crevasses, and involves steep inclines over icy ground, both of which pose some dangers to those unfamiliar with the area. Though you do not need to be an expert hiker, a good level of fitness is required.

The views from the top are well worth the effort.

Other sites in Vatnajökull National Park

Vatnajökull National Park is a vast area in Iceland, and Hvannadalshnúkur is just one site that should be visited if heading to the area.

Incredibly close by are two of the country’s most popular destinations. One of these is the Skaftafell Nature Reserve. This beautiful oasis is a wonderland of glacial tongues and lagoons, crystal clear streams, waterfalls, mountains and lava landscapes.

This reserve was once an independent National Park, before the creation of the greater Vatnajökull park.

The second major site is Jökulsárlón, a vast glacier lagoon and Iceland’s deepest lake. This lagoon fills with enormous icebergs, which break from the glacial tongue of Breiðamerkurjökull and slowly cruise their way over to the ocean. This was only enveloped into the park in 2017, but now is entirely protected.

While here, it is worth walking to the nearby shoreline, called the Diamond Beach after the icebergs that wash up here.

In this area, it is very important not to climb on the ice. When afloat, it is constantly rotating, and the lagoon has shockingly strong currents. When on the beach, they are melting and unstable.

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.

Wikimedia, Creative Commons, photo by Reykholt

The Blue Mountains, otherwise known as Bláfjöll, are a beautiful mountain range in the south-west of Iceland. They hold some of the most popular skiing slopes in Iceland, and well as the potential for other activities such as caving and hiking.

The Blue Mountains are located around 20 kilometres (12 miles) from Reykjavík, by the lava plateau of Hellisheiði.

Geology of the Blue Mountains

The Blue Mountains partially cover the Mid Atlantic Rift, which runs through Iceland. The very regular earthquakes and sporadic eruptions, therefore, are explained the high level of geological and geothermal activity that this rift creates.

Most of the mountains are now dormant, not having erupted since the last Ice Age, but not all.

Due to their formation, the Blue Mountains are composed of tuff rock.

Activities in the Blue Mountains

As mentioned, the Blue Mountains has some of the most popular slopes in Iceland. Being so accessible from Reykjavík, just a twenty five minute drive away, the region draws those who love to ski and snowboard from the beginning of February to the end of April.

Due to these opening dates, winter sports have become somewhat of an Easter tradition for many of those living in the capital.

The resort here is the largest in Iceland, and boasts 16 ski lifts, and 15 kilometres (nine miles) of slopes. Equipment can be rented on site, and there are regular lessons taught for newcomers. Regardless of if you are a novice or expert, there are slopes for all abilities.

Cross country skiing is also very popular in the area, but should only be done by those experienced, or with a trained guide. Some snowmobilers also make the most of the opportunities the mountain provides.

Other areas for skiing in Iceland include Akureyri and Skaftafell Nature Reserve.

A popular activity that can be enjoyed in the Blue Mountains throughout the year, however, is lava caving. Due to the the volcanism of the area, the plateaus around the mountains are composed of many layers of lava rock.

When this lava first cooled, it did so from the outside in, leaving running magma beneath it. If this magma had a place to flow out to, it would form a lava cave.

Leiðarendi is a beautiful tunnel, formed in a kind of ring that allows visitors to fully explore it. Trips to Iceland’s lava caves provide wonderful opportunities to learn about the nation’s geology, history of bandits, and folklore, particularly the tolls.

This lava tube also demonstrates the volcanism of the Blue Mountains. It was, in fact, created by two seperate eruptions, one two thousand years ago and one a thousand years ago. The lava tunnels formed in each collapsed together at what is now the entrance of the cave.

Much of the area around this cave and much of the Blue Mountains is covered in a delicate moss, that creeps over the lava. When visiting any area with this unique flora, such as hiking trails through the mountains, be careful not to step on it as it is remarkably delicate

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.

The mighty Langjökull, the ‘Long Glacier’, is the second-largest glacier in Iceland, at 935 square kilometres (361 square miles). For jeep and snowmobile trips, Langjökull is the most popular glacier in Iceland, and skiing and hiking here is possible as well.

Highland tracks

Langjökull is located in the Highlands, and two main highland tracks, connecting the north and the south of Iceland, lie alongside it.

The Kaldidalur road stretches from Þingvellir National Park northwards to Húsafell. The Kjalvegur road, meanwhile lies east of Langjökull and west of Hofsjökull glacier, starting near the famous Gullfoss waterfall to the south, and passing through the beautiful Hveravellir geothermal area to the north.

The landscape of Langjokull

Langjökull is about 50 kilometres (31 miles) long and up to 20 kilometres (12 miles) wide, and the ice is around 580 metres (1,903 feet) deep at its thickest. The glacier reaches its highest point in its northernmost part, which is called Baldjökull, rising around 1,450 metres (4,757 feet) above sea level.

The glacier lies over a massif of hyaloclastite mountains. The tops of these mountains can be seen in certain places on the glacier. It also conceals at least two active volcanic systems, the calderas of which are visible from the air.

The best known of these systems fuels the geothermal area of Hveravellir, east of Baldjökull. Also in the east lies the Kjalhraun lava field, which formed about 7800 years ago.

To the northwest of the glacier is another system that produced the vast Hallmundarhraun lava field, through which the Hvítá river runs in the direction of Gullfoss waterfall. Also in the area is Iceland‘s longest lava cave, the fascinating Surtshellir.

Southwest of Langjökull is the Presthnúkur lava field, fissures of which creep under the ice. South of the glacier is the Lambahraun lava field and even further south lies the Skjaldbreiðarhraun lava field and the Skjaldbreiður shield volcano.

Compared to other regions in Iceland, the area is considered relatively calm, with only 32 eruptions in the last 10,000 years.

Into the glacier

Near the highest peaks of Langjökull exists a man-made ice tunnel, a true spectacle for any visitor passing by the glacier. Designed and constructed by geophysicist and presidential candidate Ari Trausti Guðmundsson, the tunnel exists to allow visitors to explore the inside of a glacier without having to come to Iceland in mid-winter for a chance to see the less-than-reliable ice caves.

Guests traverse beneath Langjökull's thick ice sheet, experiencing the vivid blue colouration within, and gaining an insight into the glacier's beauty, formation and processes. It is the only place in the world where this is possible. ‘Into the Glacier’ tours are often combined with adventure activities such as snowmobiling.

Nearby glaciers

The glaciers located nearest to Langjökull are Eiríksjökull, which conceals the highest mountain in west Iceland, and Þórisjökull. Hrútfellsjökull also lies on the east side of Langjökull.

Between Þórisjökull and Geitlandsjökull is a valley called Þórisdalur. Along with stunning views, it features prominently in Icelandic folk tales; the outlaw Grettir the Strong of Grettis Saga, for example, is reported to have resided here for one winter.

Langjokull and the Golden Circle

Iceland’s most popular sightseeing route, the Golden Circle, would not be possible if not for Langjökull glacier; none of its three iconic features would exist in their current state without the melting ice.

Gullfoss waterfall is the most obvious example of this. The river that feeds into it, the Hvítá, is a glacier river flowing straight from Langjökull; the scale of the ice cap is hinted at by the sheer volume of water that cascades here every second.

The hot springs at Geysir, meanwhile, are supplied with water underground. Meltwater from Langjökull feeds into the surrounding lava fields, which have very porous rock, and flows in a subterranean river to the geothermal area, where it comes bursting out of the naturally forms vents.

While Þingvellir would still have its National Park and World Heritage status without Langjökull, which it received for being the original site of what is now the longest-running representative parliament in the world, it would be notably less beautiful.

Many springs exist throughout the park, also formed by the underground meltwater of the glacier. Due to its long filtration process, the water emerges as some of the clearest naturally occurring water in the world.

Silfra fissure, therefore, is the best snorkelling and diving location in the country and consistently ranked as one of the top ten places for such activities in the world.

Global warming

Langjökull is shrinking fast and concerns have been raised about the glacier due to the effect of global warming. Some researchers fear that if climate change continues at its current rate the glacier may be gone in 150 years. Less optimistic scientists have said it could be gone in as few as 50.