Hengill, Active volcano in Grímsnes- og Grafningshreppur, Iceland.
Hengill is an active volcanic mountain system in southwestern Iceland that spans a large area and reaches 803 meters at its highest point. The landscape is marked by numerous hot springs and steam vents where the ground reveals ongoing geothermal activity.
The last known eruption of Hengill occurred around 150 CE and left marks in the landscape still visible today. The thermal features seen here today are remnants of that ancient volcanic activity.
The mountain appears in Icelandic folklore through tales of trolls living in its valleys and caves. These old stories continue to shape how local people relate to and think about this landscape.
The area is accessible and can be explored on foot, allowing close views of the hot springs and steam vents. Visitors should dress in layers since weather can change quickly at higher elevations, especially during colder months.
Two power stations, Nesjavellir and Hellisheiði, tap the geothermal energy from this mountain to produce electricity and hot water for the surrounding region. This system demonstrates how Icelanders use volcanic energy to meet everyday needs.
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