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Die am Ortsrand von Furnas gelegenen Caldeiras mit heißen Quellen, Fumarolen und Geysiren - The Caldeiras on the outskirts of Furnas with hot springs, fumaroles and geysers (São Miguel / Açores)
After soaking in the Myvatn Nature Baths we went to wander around the fumaroles and mud cauldrons at Hverir. Wandering the Icelandic sights around midnight is quite a different experience than visiting during the day with LOTS of other people. A few others just taking it in and a handful of other photographers made it a great place to just enjoy the night and watch the subtle colors of sunset.
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Steam rises high into the air at the geothermal area of Námaskarð near Lake Mývatn in the north of Iceland.
Namafjall Hverir « montagne de la mine » et ses fumerolles.
La Námafjall a fait l'objet d'une exploitation minière du soufre, activité économique qui lui a donné son nom, destiné à la production de poudre à canon. Au XXe siècle, des installations géothermiques se sont développées au pied du flanc occidental de la montagne avec la centrale géothermique de Bjarnarflag.
On a cold July morning, with the air at around 3C, the various fumaroles, vents and geysers, fill the Yellowstone air with atmospheric mist.
Une solfatare, du latin sulpha terra, « terre de soufre », est un type de fumerolle rejetant d'importantes quantités de soufre. Par extension, ce terme désigne aussi les dépôts soufrés en eux-mêmes. Son nom provient de la Solfatare, un cratère volcanique d'Italie, dans la banlieue napolitaine, comportant ce type de fumerolles.
Le sifflement furieux des Solfatares avec fumerolles de vapeur vous rappelle que le magma est tout proche de la surface.
A solfatare, from the Latin sulpha terra, “land of sulfur”, is a type of fumarole that releases large amounts of sulfur. By extension, this term also designates the sulfur deposits in themselves. Its name comes from Solfatara, a volcanic crater in Italy, in the Neapolitan suburbs, with this type of fumarole.
The furious whistling of the Solfatars with vapor fumaroles reminds you that the magma is very close to the surface.
The Námafjall geothermal area is located in northeastern Iceland, east of Lake Mývatn.
In this area, also called Hverir, you will find numerous smoking fumaroles and boiling mud pots surrounded by sulfur crystals of many different colors. This sulfur gives the area a distinctive rotten-egg smell.
A small hiking trail surrounds the area and leads up to the Námaskarð pass and Mount Námafjall.
Lassen Volcanic National Park, California.
Bumpass Hell is a geothermal area of 16 acres (6.5 ha); it has hot springs, fumaroles, and boiling mudpots. The area smells of rotten eggs (hydrogen sulfide). The soil is strikingly colorful: in places red (iron), yellow (sulfur), & black (pyrite).
In each of LVNP thermal areas, the highest temperature of water is close to the boiling temp at the altitude of the particular spring or fumarole — 198 °F (92 °C) at Bumpass Hell and 191 °F (88 °C) on the northwest flanks of Lassen Peak. Temperatures as high as 230 °F (110 °C) have been recorded in LVNP.
Bumpass Hell is named after Kendall Vanhook Bumpass, an early settler who discovered the geothermal area. In 1865, while showing the editor of the Red Bluff Independent newspaper the locale, Bumpass broke through the thin crust above a mudpot & badly scalded his leg; eventually it had to be amputated.
en.wikipedia.org/wiki/Geothermal_areas_in_Lassen_Volcanic...
www.kqed.org/news/11633647/going-to-bumpass-hell-better-w...
Fujifilm X-T20. Fujinon XF 10-24mm F4 R OIS. 10mm, f/7.1, 1/500 sec, ISO 200. Thanks for viewing.
Steam, sulphur fumaroles and rotten egg smells at a geothermal area in Eastern Iceland near Lake Myvatn. guidetoiceland.is/travel-iceland/drive/hverir-geothermal-...
Island Number two. St Lucia.
From Wikipedia, the free encyclopedia
Pitons
Location in Saint Lucia
LocationSoufrière District, Saint Lucia
Nearest citySoufrière and Choiseul
Coordinates13°48′36″N 61°3′56″W
UNESCO World Heritage Site
The Pitons are two mountainous volcanic plugs, volcanic spires, located in Saint Lucia. Petit Piton is 743 m (2,438 ft) high and Gros Piton is 798.25 m (2,618.9 ft) high; they are linked by the Piton Mitan ridge. The Pitons are a World Heritage Site, 2,909 ha (7,190 acres) in size, and located near the town of Soufrière.[1]
Geography
The Pitons are located between the towns of Soufrière and Choiseul on the southwestern coast of the island. They are in the electoral districts of three and ten. The Pitons are located on either side of Jalousie Bay.
Flora and fauna
Coral reefs cover almost 60% of the site's marine area. A survey has revealed 168 species of finfish, 60 species of cnidaria, including corals, eight mollusks, 14 sponges, 11 echinoderms, 15 arthropods, and eight annelid worms. The dominant terrestrial vegetation is tropical moist forest grading to subtropical wet forest, with small areas of dry forest and wet elfin woodland on the summits. At least 148 plant species have been recorded on Gros Piton, 97 on Petit Piton, and the intervening ridge, among them eight rare tree species. The Gros Piton is home to some 27 bird species (five of them endemic), three indigenous rodents, one opossum, three bats, eight reptiles, and three amphibians.[1]
Geology
The volcanic complex includes a geothermal field with sulphurous fumaroles and hot springs.[1]
Gros Piton
Gros Piton is at the southern end of Pitons Bay. It is the second-highest peak on Saint Lucia, after Mount Gimie.[1]
Gros Piton can be climbed without ropes or mountaineering experience. One can hike to the summit and come back down to sea level within several hours. Local guides are provided by the National Park and are included with your entry fee. They are trained by the government to have basic knowledge of the languages common among tourists and of the medical procedures required in case of common accidents.[1]
Petit Piton
Petit Piton lies towards the middle of Soufrière Bay, south of Soufrière and north of Gros Piton.[1]
Petit Piton was first climbed in 1878 by Abdome Deligny. The islands of Dominica, Martinique, Barbados, and St. Vincent can be seen from its peak.[2]
Trails in a geothermal mud pool.
There was some very slow drift in the mud to the right of the picture which was creating these patterns as bubbles of noxious gasses worked their way to the surface!
The usual smell of rotten eggs accompanied the views.
Taken at Whakarewarewa Maori Village, Rotorua.
The village is a working village and they live with the geothermal activity. Cooking in the boiling fumaroles and bathing in the not so hot pools.
Hiking & Photography Blog / Instagram / YouTube / Prints
The Hveradalir geothermal area Hike in Kerligafjöll is one of the most scenic and colourful hikes in the central Highlands of Iceland.
This is one of the areas in the Highlands of Iceland where the earth feels most alive. It's a symphony of colors and shapes. It's also a very active geothermal area.
Fumes from various vents and fumaroles constantly hide and reveal different parts of the landscape. So as you hike, the landscape is sort of moving and changing too.
I have a full hike report with GPS track up on my blog, with way more photos from this area, in case you want to check it or if you want to know more about this hike.
Fumarolen bei Sasso Pisano. Die Colline Metallifere sind ein vulkanisch aktives Gebiet. Die überall zutage tretende Wärme wird in großen Geothermianlagen nutzbar gemacht.
Toskana, 13.04.2003
the highest point to 3914 m, diameter 3 km.
Last eruption 1280. Violent eruption (level 6 scale volcanic explosivity index),
lahar + pyroclastic flow to the Pacific Ocean. Since then in the caldera a 250 m deep crater lake. Due to minerals the green coloration.
At the bottom of the lake fumaroles, at the east side of the volcano hot springs.
Hverir, Ísland
It is midnight at the Hverir geothermal area in northern Iceland. Scalding hot mudpots quietly bubble their blue mud while steamy fumaroles noisily hiss in the distance. The smell of sulphur is in the air.
Explored April 1, 2016
At the foothills of this spectacular volcanic mountain is an expanse of hot springs called Hveraröndor Hverir that are known for their changing variety. You may also find a number of fumaroles, mud pools and mud pots that all seem to be boiling with relentless energy. The pass Námaskarð is strategically located at a short distance from the Krafla volcano system as well as other interesting geological spots like Búrfellshraun and the desert Mývatsöræfi.
Námaskarð earns its notoriety chiefly because of its sulphurous mud springs called solfataras and steam springs called fumaroles. Though you will scarcely find any pure water spring in this wonderful geothermal site of Iceland, the beauty of the colorful minerals defies all comparisons. The gigantic size of the mud craters is what makes you go 'wow' at the sight of them.
The other thing that is sure to strike you about Námaskarð is the sheer lack of vegetation. However, if you give a thought to the high temperature range, it does not appear an impossibility altogether. The constant emission of the fumes has made the ground utterly sterile and acidic, unfit to sustain any floras and faunas. You must bear in mind that the fumes can be harmful for humans as well.
The highest point to 3914 m, diameter 3 km.
Last eruption 1280. Violent eruption (level 6 scale volcanic explosivity index),
lahar + pyroclastic flow to the Pacific Ocean. Since then in the caldera a 250 m deep crater lake. Due to minerals the green coloration.
At the bottom of the lake fumaroles, at the east side of the volcano hot springs.
Hverir is a geothermal area with with boiling mudpools and steaming fumaroles.
PS: HAPPY NEW YEAR! :)
Location: Hverir, Myvatn, Iceland
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Norris Geyser Basin - Black Growler Steam Vent.
Le sorgenti geotermiche più calde di Yellowstone sono le fumarole.
La Black Growler Steam Vent ha registrato temperature comprese tra 93 e 138 °C.
Un'abbondante riserva idrica contribuirebbe a raffreddare queste sorgenti; tuttavia, le fumarole si trovano solitamente sui pendii o su terreni più elevati, al di sopra della riserva idrica del bacino.
Esse fanno rapidamente bollire la poca acqua che contengono, rilasciando con forza vapore e altri gas dal sottosuolo.
Norris Geyser Basin - Black Growler Steam Vent.
The hottest of Yellowstone's geothermal features are steam vents (fumaroles).
Black Growler Steam Vent has measured 199 to 280 degrees F (93 to 138 degrees C).
A plentiful water supply would help cool these features; however, steam vents are usually found on hillsides or higher ground, above the basin's water supply.
They rapidly boil away what little water they contain, releasing steam and other gases forcefully from underground.
IMG_0246m
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En Islande, dans le parc de Geysir, le Smiðdur, une fumerolle dont la fumée rejoint les nuages.
In Iceland, in Geysir park, the Smiðdur, a fumarole which the smoke joins the clouds
Grand Prismatic Spring, Yellowstone, Wyoming
The steam coming off the Grand Prismatic was intense that cool morning. Although I did make some photos of the colorful microbial mats, what really appealed to me was the silhouettes of fellow visitors on the boardwalk.
Námaskarð Pass is a geothermal area on the mountain Námafjall, in north Iceland, less than half an hour’s drive from Lake Mývatn. It is located by Route 1, which encircles the country.
Connected to the Krafla volcano system, Námaskarð is home to many hot-springs and fumaroles.
Landscape with eruption steam. Geothermal area Namafjall....
The Námafjall Geothermal Area is located in Northeast Iceland, on the east side of Lake Mývatn. At this area, also known as Hverir, you will see many smoking fumaroles and boiling mud pots, surrounded by sulphur crystals of many different colours. This sulphur gives the area an overwhelming smell of egg....
A due passi da Sant’Angelo e dai giardini termali Aphrodite Apollon, su una delle più calde falde Termali dell’isola, in un piccolo fazzoletto di spiaggia dei maronti, da secoli il respiro di Tifeo fuoriesce dalle profondità della terra. Un fenomeno molto interessante dovuto all’attività vulcanica dell’isola d’Ischia:“le Fumarole”. In quest’area il sottosuolo emana una grande energia termica che produce nuvole di vapore nell’ambiente esterno e bolle di gas nel mare alla temperatura di 100°C, osservabili con maschera da sub a pochi metri dalla riva o addirittura, avvicinandosi, agli scogli bianchi posizionati sulla sabbia bollente, passeggiando a distanza di sicurezza.
Fin dai tempi dei romani la sabbia calda veniva utilizzata per curare gli acciacchi del corpo, attraverso le così dette sabbiature, con le mani si scava un giaciglio, ci si stende e ci si ricopre di sabbia lasciando fuori solo la testa. Nel corso dei secoli molti sono stati gli usi di queste particolari proprietà delle acque Termali, nel caso specifico il calore è stato sfruttato anche per esigenze alimentari.
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Iceland. Fumaroles near geyser site.
Fumerolles près du site du geyser en Islande.
Yellowstone National Park preserves the most extraordinary collection of hot springs, geysers, mud pots, and fumaroles on Earth. More than 10,000 hydrothermal features are found here, of which more than 500 are geysers.
The place is magical at night, just be careful about the bears & bisons prowling around.
The name of Yellowstone National Park's "Mud Volcano" feature and the surrounding area is misleading; it consists of hot springs, mud pots and fumaroles, rather than a true mud volcano. Depending upon the precise definition of the term mud volcano, the Yellowstone formation could be considered a hydrothermal mud volcano cluster. The feature is much less active than in its first recorded description, although the area is quite dynamic. Yellowstone is an active geothermal area with a magma chamber near the surface, and active gases are chiefly steam, carbon dioxide, and hydrogen sulfide.[8]
The mud volcano in Yellowstone was previously a mound, until suddenly, it tore itself apart into the formation seen today.[9]
Source: Wikipedia
None of the above takes away from the sense of awe and beauty seen in this majestic area.
Go West __________________________________________________Go West Mapped
I was told that this was one of the largest geyser basins in the world, and that we were only visiting a tiny portion of the whole thing.
North of San Pedro de Atacama, Chile. June 2019.
This view from the loop trail at Seltún, shows some of the hydrothermal basins at Seltúnshverir. An observation platform on the trail can be seen at the left center of the photo. The area contains solfataras (fumaroles), mud pools and steaming ground. Fumaroles in the area deposit sulfur and sulphates on the ground near the vents. Fumaroles whose steam is rich in sulfur are called solfataras.
Seltún is part of the large Krýsuvík Geothermal field which lies on one of the NE-SW trending volcanic systems that cross the Reykjanes Peninsula. in Iceland. The volcanic zones lie in the middle of the fissure zone on the Mid-Atlantic Ridge which traverses Iceland and are visible along the south of Reykjanes.
In the mid-20th century there were plans to develop the geothermal field for utilisation, including power production, and Seltún then became one of the main drilling targets. There are old drill pads to be seen near the path along the creek. According to the Iceland Geosurvey (ISOR) one of the "boreholes started erupting intermittently in the winter of 2010". They reported that an interval of a few days between the eruptions. We found the spot but on two different visits to the field I saw no sign of geyser activity. ISOR also reports "another old borehole blew up in 1999 forming a crater with a diameter of about 30 m, now filled by mud except where a flow of steam keeps boiling pits open". That unexpected explosion in 1999 reportly caused the geothermal project to be halted. The springs have been preserved due to the lack of drilling and geothermal exploitation.
Temperatures are over 200 degrees C just below the suface. Geologist from the Iceland Geosurvey believe "the water of the pools is surface water heated by steam from a boiling geothermal reservoir. Accompanying gases such as hydrogen sulphide and carbon dioxide acidify the water and alter the rock to clay. Only the uppermost 300 m of the reservoir at Seltún is boiling, i.e., follows the boiling curve in accordance with increasing pressure. Below this depth, a temperature inversion occurs, indicating that the boiling section is fed laterally from an upflow some distance away."
The geothermal field is located in the Reykjanes Geopark.
Geologic and geothermal info from Iceland GeoSurvey (ISOR) . Some text in the caption from their web page at: www.geothermal.is/17-seltun-high-temperature-area-solfataras
Midway Geyser Basin, Yellowstone, Wyoming
On a cool September morning, visitors to the Grand Prismatic Spring were greeted with a dense mist from the hot spring and rising steam from nearby fumaroles. The conditions were perfect for silhouettes.
Volcan Ollagüe seen from the Bolivian side. That's a proper volcanic landscape I love. You can even spot fumaroles being emitted on the left side of the volcano.
It looks best full screen so please press "L" and check it
Le volcan sur l'île de Vulcano,
une des 7 îles Eoliennes, au large de la Sicile.
Il culmine à 499m
et la dernière éruption remonte à 1890.
On peut voir des fumeroles s'élevant de la crête,
et derrière cette première crête il y a un cratère qu'on ne voit pas, au pied cette première crête et du dôme au centre.
Pour l'intérieur du cratère du volcan Vulcano, aller à
www.flickr.com/photos/139889408@N07/26786972568
Il vulcano sull'isola di Vulcano,
una delle sette isole eolie al largo della costa della Sicilia.
Cima: 499m.
Ultima eruzione: 1890.
Puoi vedere le fumarole che salgono dal crinale,
e dietro questa prima cresta c'è un cratere che non puoi vedere, ai piedi di questa prima cresta e la cupola al centro.
The volcano on the island of Vulcano,
one of the 7 Aeolian Islands, off Sicily.
It culminates at 499m
and the last eruption dates back to 1890.
You can see fumaroles rising from the ridge,
and behind this first ridge there is a crater that you cannot see, at the foot of this first ridge and the dome in the center.
For the interior of Vulcano's crater, go to
A cluster of caldeiras (small hydrothermal depressions) occupies a terrace above the Ribeira Amarela (Yellow River) in Furnas, São Miguel Island, Azores, Portugal. In the foreground sits Caldeira Seca, the “Dry Cauldron” which is currently inactive, its basin devoid of both water and mud. Interestingly, a two other features in this same field carries the same name. Nearby, Caldeira Pequena is nearly dry as well, its floor patterned with polygonal mud cracks that record repeated cycles of wetting, boiling, and desiccation.
Toward the back of the field lie two adjacent depressions labeled Caldeira Barrenta — the “Muddy Cauldron” — one larger, one smaller. At the time of this photograph, the larger basin functioned as an active mud pot, with volcanic gases escaping through viscous clay-rich slurry, sending occasional slow bubbles to the surface.
The Portuguese word caldeira translates to “boiler” or “cauldron.” In the Azores, the term is applied broadly to a range of hydrothermal features, boiling hot springs, mud pots, fumaroles, steam vents, and even dry thermal depressions. These caldeiras are surface expressions of shallow hydrothermal systems driven by residual heat from the Furnas volcanic complex.
Here, the landscape is dynamic: features can shift from water-filled springs to churning mud pots to dry, cracked basins depending on rainfall, groundwater levels and flow patterns, as well as subsurface gas flow.
Yellowstone National Park is an active volcanic area. Currently the ongoing visible signs are geysers and fumaroles venting hot water and steam into the atmosphere. In this scene we are driving along the road and see many small fumaroles venting into the air and the water being collected in a small stream.
Hveravellir
Iceland
Quick update from Akureyri before we venture off to internet-less places. Marianne and I had a wonderful night last night . As night came at Hveravellir, the skies were clear so we waited after midnight for this 30 minute show in the full moon amid the fumaroles and boiling hotpots of Hveravellir. Thanks to Orvar's tips on aurora shooting, we managed to capture quite a few images and some lasting memories of the place.
The location is along the F35 Kjolur route about dead centre of the route (ie oacis in the middle of nowhere). A perfect setting for our 10 year anniversary :)
There was no smell of sulfur, and the steam actually seemed to be nourishing the plants. Ferns grew around the edges of the vents, which seemed very different in character from the sulfurous fumaroles I'm used to, which kill all nearby plant life.
It'd be enough to convince me that the gasses currently coming out of the Kilauea Volcanic Crater are harmless, or would be, if they hadn't closed the downwind half of the crater rim road. (New rumblings from the volcano as of today, stay tuned...)
Volcanoes National Park, Hawaii. October, 2022.