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Gunnuhver hot mud, Iceland -
This is what happens when you build a boardwalk over the top of a pool of boiling mud, especially wne that mudpool is haunted by an angry ghost! This is the Gunnuhver site in Iceland. We leave here tomorrow, stupid early, and I will miss the smell of sulphur!
#iceland #travel #gunnuhver #hotsprings #volcanology #damage #olympus #folkiceland
From the moment visitors enter Rotorua, they know they are somewhere unique. Steam rises from cracks, gardens, pathways and even residential streets. This, together with the distinctive scent of sulphur, signals to visitors that they are in the centre of an active thermal area.
Just minutes from city centre there are geysers, boiling pools of mud, silica terraces, mud fumeroles and volcanoes. - from Destination Rotorua website
Háhitasvæði í Ljósárgljúfri skammt frá Hrafntinnuskeri.
High temperature geothermal area near Hrafntinnusker and Laugavegur hiking trail. Colorful rhyolite, boiling mudpots and steaming fumaroles along with the last patches of snow.
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....
Dawn sunlight breaking across the hot springs and fumaroles of Hverarond near Myvatn, turning the geothermal plumes pink as they rose into the cold morning sky.
Rotorua is a city in New Zealand's North Island, famous for its unique geothermal activity (geysers, mud pools, hot springs)
Active volcanic area...Although a number of places around the world have such features as hot springs or mud pools, the four largest — and best known — geothermal areas in the world are in the United States, New Zealand, Iceland and Russia....
In the distance, a couple of steaming fumeroles at the Hverir/Hverarönd Geothermal Area, Námaskarð, North East Iceland. In the forground, foot trampled mud and volcanic clay.
Hverarönd lies just south of the monster Krafla volcano and north of Lake Mývatn, the whole zone sitting on the mid-Atlantic Ridge. The mud pools and vents are easily accessible from the highway.
This is an archive frame that has seen the benefit of generative fill. There were a couple of peeps dicking around in the mid-ground that annoyed me for the 20 mins we were there - stepping in and out of shot - and they annoyed me every time I looked at the frame for the next 8 years but I could never successfully get them out of the picture... :-)
Fuji X-T1, XF 14/2.8, 1/550th sec at f/8, ISO 200
Krafla is a caldera of about 10 km in diameter with a 90 km long fissure zone, in the north of Iceland in the Mývatn region. Its highest peak reaches up to 818 m and it is 2 km in depth. There have been 29 reported eruptions in recorded history.
Krafla includes one of the two best-known Víti craters of Iceland (the other is in Askja). The Icelandic word "víti" means "hell". In former times, people often believed hell to be under volcanoes. The crater Víti has a green lake inside of it.
South of the Krafla area, but not actually within the caldera is Námafjall, a mountain, beneath which is Hverir, a geothermal area with boiling mudpools and steaming fumaroles.
As I stood at the view point overlooking the boiling mud pools at the Namafjall Geothermal Area viewpoint, I noticed my shadow projecting onto the steam with a small circular rainbow. Hverir, Myvatn, North Iceland.
14/01/2021 www.allenfotowild.com
A zine by Johann Kauth. Edition of 50. Very limited distribution. This is a special one. Printed in Amsterdam.
Just off the road to Krýsuvík is a solfatara field at Seltún, Iceland which contains mud pools, acidic hot springs; fumaroles 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. The main sulphur area is a fumarole field that lies southwest of the boardwalk at Seltún but sulfur and sulphates occur around many of the steam vents, mud pools and acidic hot springs. Yellow spots of sulphur were visible to us as we strolled along the boardwalk.
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. 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. The lake visible in the distance is Kleifarvatn, the largest lake on the Reykjanes Peninsula. It is located on the same fissure zone of the Mid-Atlantic Ridge as the Geothermal Field. Its inflow is from local runoff and the outflow is in the subsurface.
In the mid-20th century there were plans to develop the geothermal field for utilization, 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 reportedly 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 surface. 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
Named for a female ghost, Gunnuhver is a very active geothermal area on the southwest tip of the Iceland's Reykjanes peninsula. With temperatures exceeding 300°C (570°F), it features large steam vents and boiling mud pools that can occasionally spew slag and hot clay into the surrounding area. In recent years Gunnuhver has become more active, creating new vents and mud flows that have changed its features and destroyed some earlier structures.