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The Golden Circle is a 300 kilometre (186 mile) route to the three most popular natural attractions in Iceland: the Geysir Geothermal Area, Gullfoss Waterfall and Þingvellir National Park.

This sightseeing trail is easy to do within half a day from Reykjavík, either by self-drive or on one of many tours. Some of these tours have additional activities, such as snorkelling or snowmobiling, or are conducted in a unique style, such as by helicopter, or under the midnight sun.

Within the three locations of the Golden Circle are some of the clearest examples of Iceland’s fascinating geological forces, magnificent landscapes, and rich culture.

The Geysir Geothermal Area

The Geysir Geothermal Area is a hot-spring haven in Haukadalur Valley. As could be guessed, it is home to a famous geyser, the name of which has named all others: Geysir itself.

Though this feature is currently in a phase of inactivity, its neighbour Strokkur more than makes up for it. Every five to ten minutes, it blasts a column of boiling water to heights that can reach over 40 metres (131 feet).

The surrounding area is dotted with fumaroles, hot springs, and mud-pits. There are also two other smaller geysers, Smiður and Litlí-Strokkur, that can be easily visited, as well as a hotel, restaurant, cafe and gift shop across the road.

Gullfoss Waterfall

The 'Golden Waterfall', Gullfoss one of the most beautiful and powerful waterfalls in Iceland, plummeting 32 metres (105 feet) in two tiers into the river gorge of the popular rafting river Hvítá. It is just a ten-minute drive from Geysir and is the furthest point on the Golden Circle from Reykjavík.

Gullfoss was very almost lost in the early 20th century when British developers sought to harness its incredible power for geothermal energy. Though they got the lease to the land, allowing them to go ahead with their plans, they met an unlikely adversary: the daughter of the farmer who owned it, Sigríður Tómasdóttir.

This resilient woman refused to see the waterfall, to which she and her sisters paved the first path, destroyed. She, therefore, walked over 200 kilometres (124 miles) to Reykjavík and back multiple times to meet with a lawyer in order to help change the decision.

Though the process was arduous and took years, eventually Sigríður managed to exhaust the resources of the businessmen and they withdrew their plans. Because of her, all Icelandic waterfalls are now protected from foreign investors, and she is considered one of Iceland’s first environmentalists and most important historical people.

Thingvellir National Park

The largest attraction of the Golden Circle is Þingvellir National Park. The Icelandic parliament was founded here in 930 and remained until the year 1798 before moving to Reykjavík, making it the original site of what is now the world’s longest ongoing parliament.

Today it is a UNESCO World Heritage Site and one of the most important places to visit in Iceland. This is not just for its historical and cultural values, but for also its magnificent landscape and dramatic geology.

Þingvellir is surrounded by a beautiful mountain and volcanic ranges, as it is located in a rift valley directly between the North American and Eurasian tectonic plates. This makes it one of the few places in the world where you can walk between the continents, in the Mid-Atlantic Rift.

The daring and qualified even have opportunities to snorkel or scuba dive in this no-mans-land, in a ravine filled with crystal-clear spring water called Silfra. The visibility here can exceed 100 metres (328 feet), revealing incredible geological sites. Though it never freezes over due to the constant flow of water into it, it is 2°C (35°C) throughout the year, thus underwater explorers are always equipped with protective suits.

Other sites of note are the magnificent Almannagjá gorge, which you can walk down into to reach the rift valley from the North American tectonic plate, and the beautiful lake Þingvallavatn, the largest lake in Iceland, which gleams to the south of the National Park.

Surrounding sites

Due to its convenient location in south-west Iceland, it is easy to visit the Golden Circle alongside with many other sites. Those seeking relaxation could head to the Secret Lagoon in Flúðir or Fontana Spa in Laugarvatn, those seeking adventure could book a trip to the ice tunnels of Langjökull glacier, and those seeking culture could visit the Sólheimar ecovillage. For more natural beauty, you can visit the nearby Kerið crater lake.

There are many tours that include such bonuses, but if driving yourself, you should check out this guide to great detours off the Golden Circle.

Geysir is a famous hot spring in the geothermal area of Haukadalur Valley, found in south-west Iceland.

Making up just one of the attractions along the world-renowned Golden Circle sightseeing route, alongside Þingvellir National Park and the mighty Gullfoss waterfall, Geysir is most well-known for having lent its name to geysers all around the world.

Geography 

Though Geysir itself is rarely active these days, Haukadalur Valley boasts a plethora of hot springs and geysers, including the powerful Strokkur, Smiður and Litli-Strokkur.

Strokkur is, arguably, the country’s most famous hot spring, shooting vast jets of boiling water from 20 metres (65 feet) up to 40 metres (130 feet) high. Don’t worry about missing this incredible spectacle of nature, as Strokkur erupts every five to ten minutes; just make sure to have your camera ready.

Geysir is much larger, but years can go by between eruptions here; it is currently in an inactive phase. When it does erupt, the water can shoot up in the air as high as 70 metres (230 feet).

Just a few minutes walk north of Geysir are a wealth of fumaroles emanating steam and gas into the cool Icelandic air. Aside from watching the hypnotic pillars of steam, you will also be able to observe the yellow sulphuric stains along the fumaroles themselves, a result of the earth’s minerals crystallising around the rock bed.

At the southern part of the valley, Þykkuhverir, you’ll find various bubbling mud pots. These spooky brown cauldrons are actually fumaroles that boil up through the loose ground; after a dry spell, these mud pools are likely to transform into a hardened fumarole.

Nearby Attractions 

About two kilometres (one mile) from Geysir is a preserved natural pool called Kúalaug. It has room for three to five people at a time, but care should be taken, as the area around the pool is very delicate. The temperature is 39-43°C (102-109°F), depending on where you are positioned in the pool.

The water is slightly muddy, as the pool is built on soil, and the bottom is slippery due to algae, so caution is advised when relaxing here.

Haukadalur has also seen a rise in reforestation in recent times thanks to continued experiments and research in the area. Today, Haukadalsskógur is one of the largest forests in south Iceland, boasting accessible walking paths (also for wheelchair users), fascinating vegetation and The Tree Museum, built in the memory of forester Gunnar Freysteinsson.

History 

Haukadalur has been inhabited and used as a church site since the Age of Settlement. Given its historic value, it should be noted that scholar, Ari “The Wise“ Þorgilsson, grew up here; it was also where the first pastoral school in Iceland was built.

The current wooden church was last rebuilt in 1938 but its architectural style dates back to 1842, making it well worth a visit to see how Iceland looked before industrialisation.

For accommodation, Hotel Gullfoss is approximately 7 kilometre from the Geysir area, and closer still is Hotel Geysir on the other side of the road from the attraction, where you will also find a restaurant, café and a souvenir shop.

Gullfoss ('Golden Waterfall') in Hvita river is one of the most beautiful and beloved waterfalls in Iceland and forms a part of the famous Golden Circle along with Thingvellir National Park and the Geysir geothemal area.

This mighty waterfall cascades 32 meters into the river gorge and you'll be able to stand close enough to feel the waterspray on your face. Hvita itself should not be missed by any fan of rafting, as it is one of the most popular rafting rivers in Iceland.

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.

Strokkur is Iceland’s most visited active geyser. One of the three major attractions on the world-famousGolden Circle sightseeing route, it is usually visited alongside Gullfoss Waterfall and Þingvellir National Park.

Strokkur is found in the Geysir Geothermal Area, titled after the Great Geysir, which lent its name to all others across the world. It is the greatest active geyser on site; Geysir itself is in a period of inactivity. Strokkur erupts more regularly than Geysir ever did, blasting water to heights of around fifteen to twenty metres every five to ten minutes, although it is known to reach up to forty metres. 

Strokkur and Haukadalur Valley

Strokkur is the primary feature of the Haukadalur valleyand the main reason why it is one of the most visited sites in the country. While Geysir will very occasionally still erupt to enormous heights, it is nowhere near reliable enough to justify the area’s popularity.

Haukadalur valley, however, has many other features that make it worth a visit. The natural beauty of the area is shaped by the forces of the earth; fumaroles, hot-springs, mud-pits and other little geysers are littered around, and the ground itself is dyed vividly by elements such as sulfur (yellow), copper (green) and iron (red).

Opposite the main geothermal area in Haukadalur Valley is a restaurant, cafe, hotel and luxury gift shop.

Science behind Strokkur

Active geysers like Strokkur are rare around the world, due to the fact that many conditions must be met for them to form. They are thus only found in certain parts of highly geothermal areas.

The first condition that is necessary is an intense heat source; magma must be close enough to the surface of the earth for the rocks to be hot enough to boil water. Considering that Iceland is located on top of the rift valley between the North American and Eurasian tectonic plates, this condition is met throughout most of the county.

Secondly, you will need a source of flowing underground water. In the case of Strokkur, this comes from the second largest glacier in the country, Langjökull. Meltwater from the glacier sinks into the surrounding porous lava rock, and travels underground in all directions.

Evidence of this flowing water can be found in Þingvellir National Park, where there are many freshwater springs flowing straight from the earth.

Finally, you need a complex plumbing system that allows a geyser to erupt, rather than just steam from the ground like a fumarole. Above the intense heat source, there must be space for the flowing water to gather like a reservoir. From this basin, there must be a vent to the surface. This vent must be lined with silica so that the boiling, rising water cannot escape before the eruption.

Environmental Issues with Strokkur

One of the main reasons that Geysir entered a period of inactivity was due to the fact soap used to be pumped into the vents to make the eruptions more dramatic; it damaged the structure of the vent and prevented water building up. Strokkur, therefore, is guarded against all interference, with chains keeping visitors a good distance away.

Unfortunately, however, there have been incidents where people have meddled with its natural state. For example, an artist called Marco Evaristti once poured food colouring into it to make the eruption pink. He defended himself by claiming that nature was open to artists to utiltise and the fact the colouring was all-natural, but he became a pariah amongst many Icelanders, and was arrested and fined (though never paid it).

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.