Attractions: 
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 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 of 248 metres (814 feet). With a surface area of 18 square kilometres (7 square miles), 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. In 1975, it had less than half its current surface area.
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 their nesting 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.
The South Coast of Iceland is one of the most popular parts of the country for travellers. South Iceland is lined with countless natural wonders including cascading waterfalls, volcanoes, glaciers and black sand beaches.
This incredible South Shore of Iceland stretches from the greater Reykjavík area in the west to the magnificent Jökulsárlón glacier lagoon in the east. It’s possible to incorporate a trip to The Golden Circle before heading South. This is another popular area with visitors to Iceland. Here you can see Þingvellir (or Thingvellir) National Park, the Geysir geothermal area, a volcanic crater called Kerið, and one of Iceland's biggest waterfalls; Gulfoss.
Highlights of the South Coast of Iceland
The South Coast offers an array of natural wonders that draw thousands of visitors each day.
The whole area is geologically very young, formed during the last Ice Age by the lava flows from numerous volcanoes in the area. The lowlands are surrounded by volcanically active mountains, notably Eyjafjallajökull and Hekla. If you stop at Hveragerði, you can visit the Quake 2008 exhibition where you can witness the split in the North American and Eurasian tectonic plates.
In terms of culture in the South, it is rich and diverse. Most towns have amateur groups for theatre, poetry reading, and choir song. Community is a big part of an Icelander’s life and one of the key things that help them get through the winter months. The South was once home to the ancient bishop seat of Skálholt. Also, Iceland's most famous saga, Njal's Saga, takes place in the region.
When driving the South Coast route from Reykjavík city, the first major features are the two great waterfalls of Seljalandsfoss and Skógafoss. These falls which sit beneath the notorious subglacial volcano, Eyjafjallajökull. On clear days, the Westman Islands can be seen across the ocean from these beautiful cascades. Less than a kilometre from Seljalandsfoss is the hidden gem of Gljúfrabúi waterfall.
Skógar, which is home to Skogafoss waterfall, has a very interesting museum that discusses some of the nation’s history and culture. One of Iceland’s most famous hiking trails, Fímmvörðuháls, cuts through the area and is worth the walk if you have time.
A little further down the route is the glacier Mýrdalsjökull glacier, which covers one of Iceland’s most explosive volcanoes, Katla. Many glacier hikes are taken here upon the glacier tongue, Sólheimajökull.
This landscape has also been shaped by volcanic eruptions, although these were much more recent. Vast expanses of the black sand stretch from the Highlands to the sea, part of several glacial outwash plains that flood during a volcanic eruption. One such sandplain, Sólheimasandur, is home to a crashed DC-3 Plane Wreck.
The Dyrhólaey cliffs are next, home to many seabirds. 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, which is home to basalt columns and the Reynisdrangar rock formations. These pillars are said to be two trolls frozen by the light of the sun.
Though beautiful, this area is notorious for its dangerous sneaker waves. Even on seemingly calm and still days, visitors should keep a distance from the shoreline. 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 sandplain of Skeiðarársandur before entering Vatnajökull National Park. Here you can see Vatnajokull Glacier, Iceland’s largest glacier. Many ice cave tours take place in Vatnajokull in the winter months.
Move on to the dramatic Skaftafell Nature Reserve in the National Park. Here you can enjoy a diversity of landscapes and terrains. The area was considered a National Park in its own right because it was so beautiful.
Finally, you will approach the famous Jokulsarlon glacier lagoon, a deep lake that fills with icebergs as the Breiðamerkurjökull glacier slowly breaks down. Here there are plenty of options for boat tours that take you around the lagoon and up close to icebergs. A short distance from Jökulsárlón you will find the Diamond Beach, where blue icebergs wash on the black-sand beach, and another glacier lagoon called Fjallsárlón.
Geography, Nature & Wildlife
The South Coast is the most easily accessible part of the country’s southern region, found along the Ring Road (Route 1), which encircles Iceland. The area is made up of diverse landscapes; marshlands, bays, cultivated pastures, estuaries and black sand deserts.
Underneath the soil rests a vast lava field, known as Þjórsárhraun. Reaching several hundred metres offshore, it provides a protective factor to the lowland as ocean waves crash upon it. This results in the South Shore being unusually lacking in the deep fjords that so distinctly characterise the rest of Iceland's shoreline.
Unlike most early Icelandic settlements, few of the communities in the south were based on fishing. The only town with a significant harbour in the south is Þorlákshöfn, where the ferry to the Westman Islands leaves. Some agriculture is found here, with farms nestled in the mountains, but because of the glacial floods, they are few and far between.
There are, however, plenty of hot springs in the area. The most famous is the Blue Lagoon Spa which is close to Keflavik airport. The lagoon formed as a result of the overflow from a nearby power plant.
However, there are lots of natural geothermal hot springs in more remote locations, where you can avoid the crowds and have a more natural experience. Some of the spots travellers recommend are Seljavallalaug, which is close to Skogar, and Reykjadalur, the Valley of Steam, which is close to Hveragerði.
The South 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.
You may be able to spot North Atlantic puffins nesting on the cliffs between May and August. In summer there are 2-3 times as many Arctic Tern as Icelanders so you are bound to spot some of them on your travels. 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.
In terms of sports; horse riding is popular, as is fishing, hiking, snorkelling, sightseeing and river rafting.
The Diamond Beach is a strip of black sand belonging to the greater Breiðamerkursandur glacial plain, located by Jökulsárlón glacier lagoon on the South Coast of Iceland.
Here, the icebergs which fill Jökulsárlón glacier lagoon wash up on shore, standing dazzling and defiant in stark contrast to the black sand beach. It is, therefore, a favourite amongst photographers, nature-lovers, and wildlife-enthusiasts. Many seals call this beach home, and it is one of the best places in the country to see orcas from the shore.
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 make up part of the 30 outlets of Vatnajökull, Europe’s largest ice cap and the central feature of the Vatnajökull National Park. Many of these are seen en route to the Diamond Beach as you travel along the South Coast.
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. Although now the deepest lake in all of Iceland, it only began to form in 1935.
The glacier lagoon and Diamond Beach are fantastical sites, however, the rate of their expansion is, unfortunately, a consequence of climate change. With the rate that the glaciers are melting, there may be no ice left at either site within decades.
Jökulsárlón Icebergs
Jökulsárlón glacier lagoon is one of the most famed and visited attractions in Iceland. Floating on the lagoon are enumerable icebergs 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’ thus 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.
Safety at the Diamond Beach
The Diamond Beach is a safe place for any responsible traveller; unlike at Reynisfjara, another South Coast black-sand-beach, sneaker waves and rip currents are not notorious for whisking unwitting tourists out to sea. However, there are still dangers to consider.
The main one of these is the icebergs themselves. Under no circumstance should you climb upon an iceberg, due to their slippery surfaces and sharp edges.
This is especially the case if the iceberg is at all in the water, as it could flip and trap you underneath, or else be pulled out to sea by a current with you on it.
The risk of injury and illness in the form of hypothermia is so great that extortionate fines exist to deter any ‘rebels’ looking for a thrill-seek. These have only come about due to serious incidents, to protect not only tourists at the lagoon but guides and staff who may feel obligated to embark on a dangerous rescue if they see someone at risk.
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