Highlights: 
Jökulsárlón is Iceland’s most famous glacier lagoon. Conveniently located in the southeast by Route 1, about halfway between the Skaftafell Nature Reserve and Höfn, it is a popular stop for those travelling along the South Coast or around the circular ring road of the country.
Geography
As a glacier lagoon, Jökulsárlón is a lake that is filled with the meltwater from an outlet glacier. In this case, it is Breiðamerkurjökull, a tongue of Europe’s largest ice cap, Vatnajökull.
It stands out, however, due to the fact that it also fills with icebergs breaking from the glacier, some of which tower several stories high.
These icebergs, other than their scale, are notable for their colouration. Although they are, as expected, largely white, most are also dyed electric blue in part, with black streaks of ash from eruptions centuries past.
When the icebergs finally make it across the lagoon, they either drift out to sea or wash up on the nearby shore. Because of the way they glisten against the black sands of Breiðamerkursandur, this area has been nicknamed ‘the Diamond Beach’.
In spite of being a rather recent formation, Jökulsárlón is the deepest lake in the country, with depths reaching 248 metres. With a surface area of 18 square kilometres, it is also growing to be one of the largest.
History
Jökulsárlón has not been around since Iceland’s settlement; it only formed around 1935. This was due to rapidly rising temperatures in the country from the turn of the twentieth century; since 1920, Breiðamerkurjökull has been shrinking at a dramatic rate, and the lagoon has begun to fill its space.
Today, the expansion of Jökulsárlón is accelerating. As recently as 1975, it was just 8 square kilometres, and now that size has more than doubled.
In the relatively near future, it is expected that the lagoon will continue to grow until it becomes a large, deep fjord.
Though a dark omen for Iceland’s glaciers and ice caps in general, the retreat of Breiðamerkurjökull has resulted in an incredibly beautiful, if temporary, site. This has not been overlooked by Hollywood.
Jökulsárlón has been featured in the James Bond films A View to Kill in 1985 and Die Another Day in 2002, 2001’s Lara Croft: Tomb Raider, and 2005’s Batman Begins.
In 2017, Jökulsárlón was enveloped into the Vatnajökull National Park, thus it is now fully protected by Icelandic law.
Wildlife
Because of the wealth of herring and capelin that the tides bring into the lagoon, Jökulsárlón is somewhat of a hot-spot for Iceland’s wildlife.
In summer, it is a nesting site for Arctic Terns; stay well away from this area, as these birds are notorious for the fierceness with which they protect their eggs, dive-bombing the heads of any they see as a threat. Skuas also nest on the lake’s shores in this season.
Seals can be reliably spotted here throughout the year, swimming amongst or else hauling out on the icebergs. Jökulsárlón provides them with a safe haven to rest and socialise, especially considering the waters of southeast Iceland are renowned for their population of orcas.
Vatnajökull glacier is the largest ice cap in Iceland and the third largest glacier in Europe, covering 8% of the island's landmass. Vatnajökull National park can be found in the south west of Iceland and is a popular spot for activities like glacier hiking from Skaftafell, boat tours and ice caving tours from Jökulsárlón glacier lagoon, both of which are part of Vatnajökull national park.
Facts about Vatnajökull
- Surface: 8,100 km2
- Average thickness: 400 - 600 m
- Maximum thickness: 1,000 m
- Height: 1,400 - 1,800 m
- Highest peak: 2,200 m (Hvannadalshnjúkur)
Information about Vatnajökull
Vatnajökull Glacier belongs to the greater Vatnajökull National Park, which encompasses the former national parks Skaftafell, in the southwest, and Jökulsárgljúfur, in the north. Vatnajökull's highest summit is Hvannadalshnjúkur which rests on top of a stratovolcano known as Öræfajökull.
Underneath the glacier rests some of the most active volcanoes in the country, the most notable being Grímsvötn, Öræfajökull and Bárðabunga. Volcanic activity in the region has occurred on and off throughout the centuries, and many geologists believe that such a period is overdue for immediate future. If their calculations are correct, it would mean significant volcanic activity for Vatnajökull over the scope of the next half century.
The glacier boasts of 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.
Glaciers are in constant motion underneath their weight; as they form over the centuries, the accession of snow exceeds its melting, creating a constant "push" on the ice cap. Each year, due to the melting ice water, new ice caves form that disappear come spring.
Numerous rivers run out of Vatnajökull, making up some of the greatest glacial rivers in Iceland:
- Tungnaá (west)
- Köldukvísl (west)
- Þjórsá (west)
- Jökulsá á Fjöllum (north)
- Skjálfandafljót (north)
- Jökulsá á Brú (north east)
- Jökulsá í Fljótsdal (north east)
- Jökulsá í Lóni (south)
- Hornafjarðarfljót (south)
- Jökulsá á Breiðamerkursandi (south)
- Skeiðará (south)
- Núpsvötn (south)
- Hverfisfljót (south)
- Skaftá (south)
Vatnajökull National Park
Vatnajökull National Park, in its current state, was established in June 2008. The park now covers an area of 14.141 km2, making it the second largest national park in Europe. Vatnajökull National Park has 14% coverage over the whole island of Iceland.
Rivers divide the highland plateau to the north of the park; an area that sees massive glacial flows in the summertime. 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 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 in between the ridges onto the lowlands. The sandy plains of Skeiðarársandur also lie to the south as they reach out to sea. The glacial river Skeiðará runs through this vast desert.
One of Iceland's most visited landmarks is the Jökulsárlón glacier lagoon, which sits at the head of outlet glacier Breiðamerkurjökull. There, large icebergs that have broken off the glacier gather to float in the lake before ending up in the Atlantic Ocean, or on the nearby Diamond Beach.
The Future of Vatnajökull
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, approximately over the last 15 years, Vatnajökull has on average lost about a metre of its thickness annually.
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.
Vatnajökull and Jökulsárlón in Popular Culture
- HBO's Game of Thrones (season 2, 2012)
- Batman Begins (2005)
- James Bond: Die Another Day (2002)
- James Bond: A View to a Kill (1985)
Photo from Tour to Skaftafell from Reykjavik.
Skaftafell Nature Preserve can be found in Öræfasveit, the western region of Austur-Skaftafellssýsla in Iceland. Skaftafell once used to be a national park in its own right but was merged with the far larger Vatnajökull National Park in 2008.
Skaftafell is notable for its rich flora, growing between sands and glaciers, and for its amazing and contrasting scenery. At Skaftafell, visitors will find a wealth of natural attractions, from cascading waterfalls to panoramic views over this picturesque region.
Like many areas along the South Coast of Iceland, Skaftafell Nature Preserve is known for its glorious hiking trails. You can take short and easy treks to the waterfalls Svartifoss and Hundafoss, as well as to the gorgeous Skaftafell glacier. A little further along, guests will stumble on the mountain, Kristinartindar, as well as the scenic Morsardalur Valley.
Skaftafell 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. It is also 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.
Skaftafell Visitor Center
Skaftafell also boasts a Visitors Centre, acting 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.
Breiðamerkurjökull is the glacial tongue that extends from southern Vatnajökull and into the glacier lagoon Jökulsárlón.
Breiðamerkurjökull is constantly retreating, breaking and melting, causing the Jökulsárlón glacier lagoon to increase in size. This glacier tongue provides the lagoon with all of its enormous icebergs, which perpetually break from off its tip and tumble into the abyssal waters where they float for about 5 years until they are small enough to make their way towards sea and join the countless smaller ice chunks that adorn the nearby Diamond Beach.
Breiðamerkurjökull is beset with enormous cracks and crevices, and since it's virtually impossible to tell exactly when the next big block of ice will break from it, people should admire this enormous glacier tongue from a great distance.
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:
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.
The Diamond Beach is the name of a strip of black sand belonging to the greater Breiðamerkursandur glacial plain, located by the Jökulsárlón glacier lagoon on the South Coast of Iceland.
Breiðamerkursandur
Breiðamerkursandur is a glacial outwash plain located in the municipality of Hornafjörður. The sand stretches approximately 18 kilometres along Iceland’s South Coast, more specifically from the foot of Kvíárjökull Glacier to the famed glacier lagoon Jökulsárlón, that nests by the foot of Breiðamerkurjökull Glacier. Both glaciers count amongst the 30 outlets of Vatnajökull, Iceland’s largest ice cap.
The outwash plain was formed when three of Vatnajökull’s outlet glaciers, Breiðamerkurjökull, Hrútárjökull and Fjallsjökull, flowed forward due to volcanic activity and ground the rocks of the underlying surface, creating and pushing forward the glacial sediments. Such sand plains are a common part of the Icelandic landscape, due to the island being volcanically active as well as boasting numerous ice caps. The terminus (the tip of a given glacier) also dug deep into the ground and left what is now the Jökulsárlón glacier lagoon.
Jökulsárlón Icebergs
The Jökulsárlón glacier lagoon is one of the most famed and visited attractions in Iceland. Floating on the lagoon are enumerable ice bergs that have broken off the resident glacier, creating an ever-changing scenery of incredible allure.
The river Jökulsá connects the lagoon to the Atlantic Ocean, meaning that these icebergs eventually drift out to sea where they are polished by the waves before floating back to the black sands of Breiðamerkursandur. The name "Diamond Beach" comes from the white ice on the black sand appearing like gemstones or diamonds, as they often glisten in the sun and sharply contrast their jet black surroundings.
