Hiển thị các bài đăng có nhãn Askja. Hiển thị tất cả bài đăng
Hiển thị các bài đăng có nhãn Askja. Hiển thị tất cả bài đăng

Thứ Ba, 1 tháng 9, 2015

Best Hot Springs in Iceland

Iceland is a volcanic island on the Mid-Atlantic Ridge rift zone, and the country's volcanic base contributes to its geothermal activity.

This activity underneath the Earth's surface makes Iceland richer in hot springs and high-temperature activity than any other country in the world. This otherwise cold country has about 250 geothermal areas producing 800 hot springs with an average water temperature of around 75°C / 167°F.


You will feel chilly at first when you take off your clothes, but once you are in the steamy water, every chill disappears and you can take a swim or relax in the waters with ease. Whether you have a migraine, a bad back, depressed or stressed, it is best to do this as it is said to have healing and soothing effects.

What are the best hot springs in Iceland?

1. Viti (Askja)

The caldera contains several volcanoes, including Víti (explosive volcanic crater). Water has accumulated in the crater,  its temperature is variable - it is around 30°C on average. Víti is a popular bathing site, but if you intend taking a dip, please be aware that the sloping path is very slippery in wet weather.


The road to Askja goes from road 1 to road 901 and onto mountain road F905. Onward to F910 to Drekagil. On this route there are two fords to cross, usually small. From Drekagil goes mountain road F894 (8 km) to the car park at Vikraborgir.

This place is one of the most awesome and magnificent places in Iceland.

2. Landmannalaugar

Landmannalaugar (icelandic meaning the hot springs of the people of (the) land) is a region near the volcano Hekla in the south of Iceland. This pearl of the interior is situated in a valley between colourful mountains at the dark edge of the rhyolite lava field Laugahraun.


In Landmannalaugar there is a popular geothermal hot spring. The water is a bit mixed, hot in some areas and colder in other. The pool tends to be crowded as Landmannalaugar is a popular tourist attraction. Make sure to bathe in the geothermal hot springs after exploring the area, in those surroundings it's probably one of the most relaxing things you can do on Earth.

There are lockers and changing rooms so no worries on your belongings or having no privacy. You can stay for as long as you want or when you feel you are relaxed and energized to take your journey in Landmannalaugar.


The road to Landmannalaugar (only accessible by 4x4 vehicles) is usually open from June through September but closed for the rest of the year. If you want to spend the night there you can bring a tent to the campsite or book a bed in the mountain lodge, it fits 78 people and has all the basic facilities needed. Make sure to bathe in the geothermal hot springs after exploring the area, in those surroundings it's probably one of the most relaxing things you can do on Earth.

3. Seljavallalaug (South Iceland)

Seljavallalaug is a protected 25-metre outdoor pool in southern Iceland. The pool is one of the oldest swimming pools in Iceland and was built in 1923.

The original Seljavellir pool was built of traditional Icelandic construction materials, rock and turf, in 1922.  Nine metres long and 4-5 metres wide, the original pool took two days to build. Swimming lessons were due to commence three days later. Twenty-five people were registered for the first swimming/sports course, during which they camped at the swimming pool in tents.


The old Seljavellir pool gradually fell into disuse, and was superseded by the modern pool, but in 1998 it was thoroughly restored and renovated, and today it is once again the pride of the local area.

There is no entry fee and you are asked to treat it with care and respect but alcohol consumption is strictly forbidden. I don’t think you want to be wasted in that location with something happening and no life guard anyway!

4. Grjótagjá (Mývatn)

Grjótagjá is a small lava cave near lake Mývatn with a thermal spring inside. In early 18th century the outlaw Jón Markússon lived there and used the cave for bathing. Until the 1970s Grjótagjá was a popular bathing site.


But during the eruptions from 1975 to 1984 the temperature of the water rose to more than 50 °C, though the temperature is slowly decreasing and has fallen below 50 °C again. The nearby lava cave of Stóragjá is being used as an alternative bathing site.

Grjótagjá was used as a location for filming the fifth episode of the third season of Game of Thrones, called "Kissed by Fire".

Jóhanna, Iceland
© 2015 by Iceland24

Thứ Bảy, 1 tháng 8, 2015

Askja volcano travel guide (Iceland)

For many years now, Askja has been the most popular excursion from Lake Mývatn and one of the top destinations in Iceland.

You will travel through the largest wilderness of Iceland, filled with marvels of nature, driving across lunar landscapes where US-astronauts trained before they ventured to the moon in 1969.

Askja volcano travel guide (Iceland)

You will see scenes of unforgettable nature and exiting geology. Askja, the huge caldera, is still in the making through bedrock subsidence above a deep-seated magma source. It lies centrally in the mountain massif Dyngjufjöll and is an active centre of a volcanic system.

Askja volcano travel guide (Iceland)

Askja was not explored until the 19th century. In 1874-1875 there was a series of volcanic eruptions in the system, culminating in a very powerful eruption. Some 2 billion cubic metres of ash and pumice where blown from vents now on the bottom of Lake Öskjuvatn . This 11 sq. km-lake formed within a few years, following the event. It is the deepest lake in Iceland, 220 m. The latest eruption in Askja occurred in the autumn 1961.

Askja volcano travel guide (Iceland)

We recommend you to walk at the slopes of a 1961-crater. An easy 30-min.-long walk leads you to the explosion crater Víti (Hell) at the rim of Lake Öskjuvatn.

Askja volcano travel guide (Iceland)

A small, milky and warm lake adorns the crater. Amazingly, it turns into a heaven if you care to take a bath in it. After enjoying the unearthly quietness and bizarre landscape our passengers return to the bus.
Askja volcano travel guide (Iceland)

Víti is a popular bathing site, but if you intend taking a dip, please be aware that the sloping path is very slippery in wet weather.

Askja volcano travel guide (Iceland)

Route back to Lake Mývatn, you could make a stop is made at Herðubreiðarlindir where clear water flows from springs in an old lava flow. The springs sustain beautiful vegetation and form small ponds providing conditions for flowering plants and birdlife in the otherwise barren, volcanic landscape. The high bulk of the old sub-glacial volcano (tablemountain) Herðubreið (1682 m) rises about 3 km distant and provides a breathtaking background to this wilderness oasis.

Askja volcano travel guide (Iceland)

Askja is a 50 km2 caldera in the Dyngjufjoll mountains. The mountains emerged in eruptions under an Ice Age glacier cap. Askja itself was formed, for the most part, at the end of the Ice Age in a major ash eruption which caused the roof of the magma chamber at the heart of the central volcano to subside. Askja is a part of Vatnajökull National Park. The caldera contains several volcanoes, including Víti (explosive volcanic crater). Water has accumulated in the crater, its temperature is variable - it is around 30°C on average.

HOW TO GET THERE?

The road to Askja goes from road 1 to road 901 and onto mountain road F905. Onward to F910 to Drekagil. On this route there are two fords to cross, usually small. From Drekagil goes mountain road F894 (8 km) to the car park at Vikraborgir.

Askja volcano travel guide (Iceland)

Another option is to go from road 1 to mountain road F88 via Herðubreiðarlindir to Drekagil. On this road ther are fords on the rivers Grafarlandsá and Lindá that need to be crossed. The fords can be difficult or even impassable for small jeeps.

HOW TO DRIVE ON F ROADS?

So what do you have to keep in mind when planning a trip to the highlands?

-You have to be driving a 4x4 vehicle.
-It is strongly advised that people travel together in 2 or more cars.

Askja volcano travel guide (Iceland)

-You should check information about the conditions of the roads before you start your journey. It is best to call 1777 or check www.road.is.
-Make sure that the F road you plan to travel on is open for traffic.
-Driving outside of the roads in the highlands is strictly forbidden. Actually, driving off road in Iceland is always forbidden!

Askja volcano travel guide (Iceland)

-Buying a detailed map of the route you will be travelling is much better than using the standard free map you can get at tourist information centers and gas stations. This is not necessary but can be very helpful.
-Whenever possible, try to talk to local people about conditions in the area, such as rangers.
-Tell somebody about your travel plans. You can for example tell the good people over at www.safetravel.is (or just the ranger you talked to before).


-It is good to be prepared for all types of weather as the weather in the highlands can change almost with a blink of an eye.
-Be aware that telephone signals in the highlands are not very stable and you can go for a long while without a mobile connection.
-The emergency number in Iceland is 112. You are able to call it in the highlands, even without a mobile connection.
-There is no petrol station in the highlands so make sure you fill up! :)


THINGS TO CONSIDER WHEN CROSSING THE GLACIER RIVERS

When you cross rivers, make sure that the 4 wheel drive has been engaged before going into the river. Drive very slowly and use the low range if possible. Never switch gears in the middle of the river.

Askja volcano travel guide (Iceland)

Glacial rivers usually have less water in the mornings. During warm summer days, the flow of the river can increase a lot. Heavy rain can also increase the flow of a river substantially. Be aware that rivers can sometimes not be crossed even if the road is open and you are driving a 4x4 vehicle.

A good rule of thumb regarding glacier rivers is that if you would not want to wade through a river you should not drive through it. Crossing rivers can be a serious matter if people are not careful. Whenever possible, cross with someone with experience in crossing rivers.

Askja volcano travel guide (Iceland)

Fords over rivers are usually marked and should be easy to spot. Be aware of big rocks that might be under the surface of the water. The worst place to cross is where the water is most calm because that is usually the deepest part of the river. The best way to cross is to follow the torrent diagonally down the river, that way the torrent helps the vehicle over.

If you prefer a guided tour, we recommend a guided tour from Lake Mývatn to the Askja Caldera with this Icelandic company.

You can also make it with a Bus 4x4 from the company Visit Askja. Good price and great adventure!

Peter and Helga
Iceland24

Thứ Tư, 29 tháng 4, 2015

Krafla Caldera - Planning a Trip in Myvatn and Krafla

Krafla is a volcanic area in the northeast of Iceland, and one of Iceland’s largest lava lover lures. Craters, cones, pools and geothermal heat – Krafla has it all.

Krafla is basically a 10 kilometre wide caldera which contains volcanoes – the latter containing a small azure-coloured geothermal pool and the former containing Iceland’s deepest lake. Both are inland in the Highlands and only accessible in the height of summer.


But the Krafla area starts close to Lake Mývatn and only a few minutes’ drive from Reykjahlíð village. At this convenient nearest point, accessible in any car, you will find the remains of the lengthy mid-80s eruption. This means a large, relatively flat area to explore and the opportunity to get up close and personal to spiky lava, hot pools, bubbling mud, ‘eggy’ sulphur smells and the expansive power station in the area.

The large Krafla geothermal power station takes full advantage of the volcanism in the area and its run-off is used in the lovely Mývatn Nature Baths. The site is also home to the first drill hole of the fascinatingly exciting Iceland Deep Drilling Project.


The project looks to harness the power of “super critical” water in energy generation and this involves drilling down to the lava where large quantities of water can quickly be heated to over 400°C. The project aims to drill around 4 km below the surface – but at Krafla the scientists and engineers hit lava at just 2,500 metres. That’s shallow!

Krafla is a sensitive site and is easily damaged by people walking around and exploring. That is the reason the site is so well marked with footpaths and trails. These, combined with the good car park and bathroom facilities make Krafla a good place to go hiking with children and people with somewhat reduced mobility. The paths may be suitable for wheelchairs in good weather, although they can get soft and muddy in wet conditions.


Krafla is the best place to see first-hand where Iceland comes from. The whole country used to look like this at one point – as in fact did almost every country if you look far enough back into prehistory. It makes a good contrast with places like the Reykjanes peninsula down south, which features the same sort of landscape, except a few thousand years older. The difference is at once both stark and surprisingly little.


One thing is for sure: we all owe our lives to volcanoes and given long enough, Krafla will develop into remarkably fertile soil. But none of us will be alive to see that…

Krafla Geothermal Power Station

Development for harnessing of geothermal steam at Krafla, near Lake Mývatn in north Iceland, began with trial boreholes in 1974. Construction work commenced in the summer of 1975. The powerhouse and other structures were designed for two 30 MW turbines.

The station was initially designed and built for the Icelandic State and was run by the Krafla executive committee and later taken over by the State Electric Power Works. In 1985 Landsvirkjun purchased the Krafla station from the State.


Various initial difficulties were encountered in exploration and drilling for steam, largely due to seismic and volcanic activity which caused corrosive magma vapours to enter the geothermal system, destroying the borehole linings. A series of nine volcanic eruptions began in the vicinity of the station in December, 1975 and lasted intermittently until September 1984. Seismic and volcanic impact on operations at Krafla has been gradually diminished since then.

In 1996, Landsvirkjun decided to complete the install action of the second unit. Drilling for steam began immediately using improved drilling technology which has proved highly successful. Electricity production from the second unit began in November 1997, and since late 1998, the Krafla station has been operated with full capacity of 60 MW, as originally planned.

Get there by bus from Mývatn
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Berglind Rós
Iceland24
April 2015

Thứ Hai, 1 tháng 12, 2014

Top 20 Things to Do in Lake Mývatn - Trip to Mývatn

Mývatn offers a unique natural environment. With large contrasts and small distances you can experience the most and the best that Iceland has to offer. Large open spaces with roads and walkways lead travellers to interesting locations, were volcanic eruptions have played a crucial role in the formation of the landscape.

Top 20 Things to Do in Lake Mývatn - Trip to Mývatn

Whether the plan is to enjoy the landscape, examine unique natural phenomena or take a closer look at the plant and bird life, Mývatn has it all. Furthermore the area offers a variety of services in accommodation, food and entertainment, based on years of experience and knowledge. A large number of travellers visit Mývatn in the summer, but many believe the lake and its surroundings to be no less impressive in the wintertime.

The lake was created by a large basaltic lava eruption 2300 years ago, and the surrounding landscape is dominated by volcanic landforms, including lava pillars and rootless vents (pseudocraters). The effluent river Laxá is known for its rich fishing for Brown Trout and Atlantic Salmon. The name of the lake (Icelandic mý ("midge") and vatn ("lake"); the lake of midges) comes from the huge numbers of flies (midges) to be found there in the summer.

Top 20 Things to Do in Lake Mývatn - Trip to Mývatn

Must do

-Drive or cycle around Lake Mývatn, one of the largest lakes in Iceland, 37km2. Varied bird life, unique nature with landscape being formed by intense volcanic activity. Possible to rent a bike.

-Climb up to the crater Hverfjall. Walk the whole circle around the rim of this beautiful tephra ring which is one of the largest in the world.

Top 20 Things to Do in Lake Mývatn - Trip to Mývatn

-Taste the traditional “Hverabrauð” with smoked trout. This is dark bread that the locals bake underground in the geothermal heat. Available at most cafe’s and restaurants.

-Take a relaxing bath in the Mývatn Naturebaths and don ́t forget to try out the natural steam bath as well, but steam bathing is an old tradition in the area. The spa is open all year round. Spoil yourself!

Summertime (1. June - 31. August): 09:00 – 24:00
Entry no later than 23:30.
Wintertime (1. September - 31. May):  12:00 – 22:00
Entry no later than 21:30.

More information: http://www.jardbodin.is/en/

Top 20 Things to Do in Lake Mývatn - Trip to Mývatn

-Go birdwatching around the lake and visit Sigurgeir ́s Bird Museum for an interesting showcase and great information on icelandic birds and their habits.

-Take a sightseeing flight from the local airport in Reykjahlíð village. It sure looks different from above, great views over the region.

-Rent a bike and cycle to the Höfði Peninsula. Great view to the lake, rich birdlife, trees and vegetation.There is a hiking path around the peninsula and great view from the top of the hill.

-Get lost in Dimmuborgir lava formations. Great place for hiking, with marked trails that take you around these beautiful natural formations. Beware of the trolls and elves around.

Top 20 Things to Do in Lake Mývatn - Trip to Mývatn

The Dimmuborgir area consist of a massive, collapsed lava tube formed by a lava lake flowing in from a large eruption in the Þrengslaborgir and Lúdentsborgir crater row to the East, about 2300 years ago.

At Dimmuborgir, the lava pooled over a small lake. As the lava flowed across the wet sod, the water of the marsh started to boil, the vapour rising through the lava forming lava pillars from drainpipe size up to several meters in diameter. As the lava continued flowing towards lower ground in the Mývatn area, the top crust collapsed, but the hollow pillars of solidified lava remained. The lava lake must have been at least 10 meters deep, as estimated by the tallest structures still standing.

The lava flow surface remains partly intact around the Dimmuborgir area, so that the Dimmuborgir itself sits below the surrounding surface area. The area is characterised by large hollow cell- or chamber-like structures formed around bubbles of vapour, and some dramatically standing lava pillars. Several of the chambers and pillar bases are large enough to house humans, giving rise to the term "castles" (borgir).

-Explore the pseudocraters at Skútustaðir, interesting crater formations formed in steam explosions when molten lava flowed over wetland.

-Visit the geothermal area Hverir by Námaskarð. High temperature area where you find steaming fumaroles and bubbling mudpools. Watch out it ́s boiling hot!

Top 20 Things to Do in Lake Mývatn - Trip to Mývatn

-Get to know the icelandic horse and it ́s good temper by taking a riding tour through the beautiful district of Lake Myvatn. No riding experience needed.

-Visit the Krafla area, one of Iceland ́s most active volcanic area. Marked hiking trail to Leirhnjúkur, where the lava is still steaming hot since last eruption in 1984.

Top 20 Things to Do in Lake Mývatn - Trip to Mývatn

-Hike the marked trail to the top of Mt. Vindbelgur. Amazing view over the lake, pseudocraters and the Mývatn region from the top.

-Take a day tour to the Askja Caldera and the nature reserve Herðubreiðarlindir. Scenes of unforgettable Icelandic nature and geology. Only accessible by 4x4.

Top 20 Things to Do in Lake Mývatn - Trip to Mývatn

-Experience the Aurora Borealis - Northern lights, during winter time. You can also go on a snowmobile tour or nordic skiing tour on the frozen Lake Mývatn.

-Meet the Icelandic Yule Lads in Dimmuborgir during the month of December. These are the 13 “santa clauses” of Iceland, funny and interesting fellows.

-Dettifoss is a waterfall in Vatnajökull National Park in Northeast Iceland, and is reputed to be the most powerful waterfall in Europe. It is situated on the Jökulsá á Fjöllum river, which flows from the Vatnajökull glacier and collects water from a large area in Northeast Iceland. The falls are 100 metres (330 ft) wide and have a drop of 45 metres (150 ft) down to the Jökulsárgljúfur canyon. It is the largest waterfall in Europe in terms of volume discharge, having an average water flow of 193 m3/s.

Top 20 Things to Do in Lake Mývatn - Trip to Mývatn

-Buy a traditional Icelandic woolen sweater, as a souvenir to take home. Knitted by the local ladies.

-Participate in the Myvatn Marathon held in May every year. One of the best views one can get while running a marathon. The track goes around the lake.

-Explore the beautiful cave Lofthellir, a weird world of ice and darkness. Amazing ice sculptures inside the lava cave. Only accessible on a guided tour and 4x4.

Top 20 Things to Do in Lake Mývatn - Trip to Mývatn

LINKS

Mývatn panoramic virtual tour
http://www.icelandvirtualtour.com/myvatn-skutustadir-pseudocraters.html

HIKING FROM DETTIFOSS TO MÝVATN

Many hikers go from Dettifoss to Mývatn (Krafla). This route is not marked and not within Vatnajökull National Park. However, for the many hikers that go this route, here are some points to consider.
Distances:


Dettifoss – Lake Eilífsvötn (west side) 12-14 km 

Eilífsvötn - Krafla ~12 km 

Krafla - Reykjahlíð ~13 km


Navigation  

The route from Dettifoss to Krafla is not marked and there is no clear path to follow. The hike from Krafla to Reykjahlíð is a marked trail and starts at the car park at Leirhnjúkur. Therefore, during most of the Dettifoss-Mývatn route, hikers need to have good navigation skills. 

Hikers need to know how to use a GPS instrument and/or a compass and have a good understanding of maps. There are hills and mountains in the landscape that are helpful for navigation, eg. the mountain Eilífur, which can be easily seen from nearby Dettifoss on a clear day. However, on a foggy day the forms of the landscape cannot be seen and it is easy to lose direction. Those who do not have good navigational skills are recommended not to go this route. 

Route landscape  

There are no special dangers on the route. The route from Dettifoss to Lake Eilífsvötn goes over a gravel plain, moor and tussocks and is quite easy to pass. From Lake Eilífsvötn, the conditions of the hiking route depends on which direction is chosen. The more west hikers go the more lava and ravines they pass, where special care has to be taken. 

Top 20 Things to Do in Lake Mývatn - Trip to Mývatn

Drinking water  

Hikers need to carry all beverages for each day of the hike, as there are only three places where there is access to drinking water:  

-On the campsite at Dettifoss there is drinking water in containers. Rangers from Vatnajökull National Park fill the containers with fresh water every day. Please use this water as spaerly as possible. 
-At Lake Eilífsvötn, both on the west side and east side, are springs and brooks which are safe to drink from. 
-At the toilet house at Krafla/Leirhnjúku
Berglind Rós, Iceland24
© 2014 Iceland24, December 2014

Thứ Tư, 27 tháng 8, 2014

Seismic activity near the Askja caldera

A 4,5 Magnitude earthquake occurred just east of the Askja caldera at 01.52 GMT this morning and strong seismic activity has been detected south of Askja in recent hours. The dike intrusion is believed to have reached a lenght of more than 40 kilometers to the north, towards Askja.


Models of the intrusion, based on GPS measurements of land deformation and earthquake resolutions, indicate that about 20 million m³ of magma have entered the intrusion over the last 24 hours; 3-400 million m³ since the beginning of the episode, on Aug. 16. The intrusion also seems to have caused considerable stress in the bedrock over a large area, including the vicinity of Askja. According to scientists at the Icelandic Met Office, that could explain the 4,5 event near Askja this morning. Most of the seismic activity has however been concentrated near the intrusion, north of Dyngjujokull outlet glacier.

„The 4,5 Magnitude earthquake near Askja was duly noted,“ says Magnus Tumi Gudmundsson, professor of geophysics at the University of Iceland. „Our interpretation of that event is that this is a reaction in the rock strata to the intrusion coming from the south. It causes tension, but the earthquake does not signify an impending eruption in Askja.


This is a very interesting sequence of events; big news really in a geological context, even though an eruption has´nt happened yet, and hopefully will not happen. We are looking at the active rift between the plate boundaries in the middle of the country, where much of the volcanic activity has taken place. This particular area has been relatively quiet in recent decades; an intense episode like this has probably not happened for the last hundred years, perhaps not even two hundred years.

How much has the land spread? 

„It´s difficult to say precisely. The intrusion is perhaps 2 - 3 meters wide, but that does not mean that the distance between Egilsstadir and Reykjavik has increased by that; rather the island is being pulled apart, and the landmass on either side is pushed together. But locally, down in the crust, the rock has been cleaved.“

Source: www.ruv.is
Iceland24

Thứ Tư, 9 tháng 7, 2014

Apollo Astronaut Training in Iceland

You know that Apollo astronauts visited craters on the moon, but did you know that some of them also visited Craters of the Moon right here on earth?


In 1965 and 1967, two groups of American Apollo astronauts visited Iceland to study geology and practice collecting samples, under the guidance of Icelandic and American geologists. The Apollo geology field exercises were intended to develop the astronauts observational skills in recognizing basic geologic structures.


Nine of the twelve men who would later set foot on the moon between 1969 and 1972, came to Iceland to train for their missions.






Peter, Iceland24
July 2014